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[Entrepreneur Interview #17] Takahiro Kato (Faithful) – Part 1

  • Interview
2026.03.12

“Leaning in closely to the vision of business leaders”
Realizing a Venture Ecosystem through M&A

D-POPS GROUP has 25 group companies that we call partners (at the time of publication).

For this article, we interviewed Takahiro Kato, the Managing Director, Operating Officer, and Corporate Planning Head of D-POPS GROUP Co., Ltd., as well as Co-President of Faithful Corporation, one of D-POPS GROUP’s first member companies. (This interview was conducted in December 2025.)

◆Journey to Joining the Company

Sugihara:
Thank you for agreeing to this interview, Mr. Kato!

I understand you joined the company in August 2006. Could you tell us about your career up to that point and the circumstances that led to you joining?

Kato:
My previous job was at an accounting firm in Sendai, where I worked as a financial consultant. I was responsible for supporting the establishment of medical corporations and the opening of medical malls. I worked like crazy there for about five years.

At the time, the company had a compensation structure where performance was directly reflected in your salary. Despite being in a regional city and being only 23 years old, I was earning an annual income of about 5 million yen. Given the price levels of 20 years ago, that was quite exceptional treatment.

However, because I started earning so much at a young age, before I knew it, the focus of my attention shifted from the customers to my own income. I started prioritizing what benefitted me most, thinking things like, “I can get this customer to sign for this amount of insurance.” I think I had become conceited.

Around that time, a mentor who had been very kind to me since my days as a part-time student worker went independent and started his own business. That CEO became my client, with an attitude of “If Kato is going to do his best on this, count me in.” However, I ended up getting promoted later, and in my new position, I no longer directly handled his account, so I became emotionally detached. After a while, his business stalled, and he had to close it down.

Back when I first started learning bookkeeping in an ordinary high school, I had the pure ambition of becoming someone who helps out CEOs in the future. And yet, I failed to notice the changes in my dear mentor’s situation due to my shortsighted desire for personal gain. I was tormented by intense regret, realizing this was the result of my own arrogance.

I thought to myself, “Rather than supporting a president from afar as an external consultant, what if I could support a single company president and scale a business even more if I became his or her right-hand man?”, and began looking to change jobs.

Sugihara:
Is that when you met President Goto?

Kato:
Yes. At the time, I was interviewing with two companies: D-POPS and one other.

The other company wanted me to join immediately after giving me an offer. However, I was still living in Sendai at the time, and it was right before my daughter was to be born. I told them I absolutely needed them to wait three months, but they declined, saying that would be difficult.

President Goto, on the other hand, was different. When I honestly explained my circumstances, he said, “I understand. I’ll wait three months.” Moved by the depth of his character, I decided to join D-POPS.

What I still haven’t forgotten to this day is the intensity of the interviews. I went through two rounds, and President Goto handled both of them personally. Each one lasted over three hours—more than six hours in total—listening to my future goals and feelings while I shared what I could contribute. It was precisely because of that dense, meaningful dialogue that I felt certain I wanted to make a fresh start under this man.

◆D-POPS in the Early Days

Sugihara:
Three hours! That’s incredible. What was your role when you joined in 2006?

Kato:
My role back then was defined as “taking charge of general back-office operations”. I was hired into the administrative office with the potential of becoming an executive staff, but when I actually started, I was shocked by the state of things, ha ha.

For example, I was solely responsible for collecting sales proceeds from all the stores. At that time, installment sales (loans) weren’t common yet, so millions of yen in cash accumulated in each store’s safe every day. I spent my days going from store to store, collecting the cash, carrying it to the nearest ATM, and depositing it day by day so we could track it later. After visiting five or six stores, it would be evening. I’d return to the office and spend the rest of the day reconciling cash and handling the accounting.

The atmosphere of the organization was like a battlefield. I had the feeling that in order for us to survive, I needed to produce results even if it meant knocking the neighboring competitors out of commission. It didn’t matter if you were a full-time employee, a part-timer, or a dispatch worker…everyone was simply chasing the number of units sold—in other words, sales—right in front of them. It was that kind of time.

Sugihara:
The management system also must have been completely different from what it is now.

Kato:
Quite so. At that time, attendance was confirmed through a system where store staff would send a fax to the head office when they arrived at work. Outside of this system, we couldn’t even tell if a particular store was open. Occasionally, the head office would receive calls from customers asking, “Why isn’t the store open today?”, ha ha.

Later, we introduced an IT system, but then some staff started clocking in remotely from outside the stores. We realized that it wasn’t any use to just make sure our employees were clocking in.

Next, we tried a method where staff had to answer a company philosophy-related quiz every morning using the stores’ fax machines. However, some clever people tried to cheat by programming the fax machines to send it at a set time. It was a constant game of cat-and-mouse with fraudulent access and time-card tampering, so we needed to rethink the entire system from the ground up.

Sugihara:
How did the organization transform into what it is today?

Kato:
I think the big change started around 2007 or 2008 when we began hiring new graduates. We shifted away from a culture where “anything goes as long as you hit your numbers”. As educated new graduates joined, the organizational consciousness flipped completely. Looking back, that was the major turning point.

Sugihara:
Did your own mindset change, too? When did that happen?

Kato:
Yes, there was a significant shift that changed my outlook on life. For a long time, whenever President Goto visited banks to report on our management status, he would always use the words ‘sincerity’, ‘humility’, and ‘gratitude’. To be honest, at the time, they sounded like nothing more than magic words to me. But after being in contact with this organization for so many years, I’ve truly internalized those words and come to agree with them deeply.

◆Building the Organizational Foundation

Sugihara:
Before the transition to group management in 2017, you reportedly handled all sorts of tasks as Corporate Planning during the D-POPS era.

Kato:
Yes. For about ten years before we moved into M&A in earnest, I spent all my time running around to build the organization’s foundation. At the time, we didn’t even have a contract with a labor and social security attorney, and labor management was essentially handled by President Goto’s mother. So, I started by switching those tasks to a professional system.

I also worked on eliminating time lags in cash management to visualize cash flow and created a performance management system that didn’t exist before. I set up the data needed for management decisions one by one, such as calculating precise figures per individual store including seasonal factors and managing store-specific profit and loss (P&L).

Sugihara:
Without such meticulous system design, managing at the current scale would be impossible.

Kato:
You’re absolutely right. However, while organizing the systems, what I always valued was the heat and passion of the front lines—what we call our store staff’s “empathy-driven customer service”. Right after I joined, I had a one-week orientation where President Goto and I visited every single store together. We would stand in front of a store for about an hour, watching the staff interact with customers, and then discuss it.

President Goto told me, “That store manager’s numbers might be average, but they enjoy such overwhelming feedback from their customers. Look, the customers are leaving with such smiles. The shape of the smile differs by store, but that is the strength of D-POPS.”

He taught me not just to manage numbers, but encouraged me to feel the temperature of our stores and the bonds with customers firsthand. I think it was because of that experience, I was able to focus on creating organizational management systems that were heart-led, rather than creating systems just to control people.

Sugihara:
Were you ever directly involved in the actual business operations at those stores?

Kato:
To accurately understand store operations, I spent only two weeks at one site. After understanding the work flow and what problems they encounter there, I returned to my duties at the head office.

Although I was in the administrative office when I joined, my proposals were often planning-oriented, and I was frequently asked for creative improvements. I was given the advice: “Change your title to ‘Corporate Planning’, get out there, and make things move more.” From that point on, I’ve been working in Corporate Planning for around ten years now.

◆The Start of M&A Strategy and Meeting Faithful Corporation

Sugihara:
You were appointed as the President of Faithful in 2017. What led up to this?

Kato:
Around 2015 to 2016, just as D-POPS GROUP reached 10 billion yen in sales, we faced a massive headwind due to changes that were made to the sales rules within the telecommunications industry. It was our second time to experience a crisis of that scale, resulting in a 100-million-yen deficit in just three months.

At that time, the executive members decided that instead of going on the defensive, we should show a challenging spirit. Each of us stepped into new domains. Mr. Hori, who had been in charge of HR, took the lead as the CEO of Good Crew. Mr. Iwama became the CEO of Gnext, which we had acquired through M&A. Mr. Fujita established Advancer, and Mr. Hosaka founded STAR CAREER. The executive staff of that era began making big moves.

Amidst that, I was entrusted with being responsible for M&A.

Sugihara:
Was this shift towards M&A strategy necessary?

Kato:
Yes, it was a natural progression for the head of Corporate Planning to take charge of M&A. President Goto had been saying for a while that he wanted to pursue M&A, and there was a sense of urgency, that we wouldn’t be able to dramatically increase our growth trajectory only through businesses built up using internal resources alone (i.e., organic growth). It was difficult to work backward from our growth goals based on a labor-intensive model. So, we decided to make M&A a central pillar of our growth strategy.

In fact, this Faithful Corporation was one of the companies I acquired while serving as the head of M&A.

Sugihara:
So, you became the representative of the very company you decided to acquire?

Kato:
Yes. Our first M&A deal was a company called graphD, and the second company we acquired was Faithful. Since I was the one who proposed and pushed for the acquisition, I took it upon myself to steer the ship afterward. That is how I became its President.

Sugihara:
It sounds like the very structure of D-POPS GROUP changed radically between 2015 and 2016.

Kato:
Exactly. That was when our current group management platform was built.

Sugihara:
You mentioned Faithful was the second company you acquired. What sort of business were they doing at the time?

Kato:
Actually, that business had to pivot just a few months after we acquired them.

Initially, Faithful’s main business was article production outsourcing. However, right at that timing, society was starting to question the reliability of curated media, which sent shockwaves through the entire industry. We were caught in the middle of that storm, and the articles we were handling came under fire.

We found ourselves in a situation where we couldn’t continue the core business that accounted for 70% to 80% of our revenue, and we plunged into a massive deficit. Normally, one might give up and conclude that the M&A was a failure, but if we had retreated then, we wouldn’t have been able to make our next move. So, we decided to cut off the unprofitable old business and aim for a recovery.

◆Building a Sustainable BtoB Model

Sugihara:
How did you go about rebuilding the company into its current business from that point?

Kato:
The business as it stands today was not something we inherited from the acquisition…it was built completely from scratch.

At the time, D-POPS GROUP’s non-executive director, President Naito of Findstar GROUP Co., Ltd., gave us the following advice at a board meeting: “If you slightly shift your existing business model, you will find new business opportunities.” So, we asked ourselves, “Besides selling mobile phones in physical stores, what are we capable of doing?” Then, we decided to pivot entirely to communication consulting targeted at corporations.

While launching this new business, I was handling bank relations as an executive staff of D-POPS GROUP. There was an expectation from those around me not to exhaust the staff working on-site, and to create a sustainable business. I came up with the idea of a model that utilized banks as referral partners, and figured that would be the best. I proposed this to the banks, and they thankfully agreed to help introduce us to other companies.

◆Thoughts on the Strengths of Faithful and His Colleagues

Sugihara:
If you had to describe Faithful’s current business in one sentence, what would it be?

Kato:
In short, we support small and medium-sized enterprises (SMEs). We had originally taken over a media business, but we steered it to build the current consulting model that solves the challenges of SMEs in an entirely new way.

Sugihara:
Among the many consulting firms out there, what are Faithful’s strengths?

Kato:
Our overwhelming strength is definitely that since our staff—who have years of experience in mobile phone shops—provide the consulting proposals, we can put all that know-how to good use. Other companies selling office automation (OA) equipment to corporations tend to just sell the products, but the relationship ends there. Follow-up is difficult for them, and because they lack deep ties with telecommunications carriers, they can’t handle complex adjustments.

We can provide fair and neutral comparative proposals backed by strong relationships with carriers. Above all, we have an environment where members who transferred straight from an on-site workplace are able to contribute right from the start.

Sugihara:
So then, the environment for your members was also part of your consideration when launching that new business.

Kato:
Yes, and in fact, we had an underlying goal there as well. Operations for mobile phone stores are naturally focused on weekends, but a BtoB business allows us to create a work environment focused on weekdays.

As members progress in their careers, they can acquire higher expertise and provide more to our clients and our company itself. By digging deep into the BtoB domain, I wanted to expand the options my colleagues would have in the future.

Sugihara:
Was the transition from store-based BtoC sales to corporate BtoB sales a big obstacle for your members?

Kato:
That is still an area of great struggle for us, even today, and we are in a constant process of trial and error. The sales styles and required knowledge are completely different, so that wall was even higher than I imagined.

The vast majority of Faithful’s members are transfers from within our group. The nature of starting out this way is different compared to an organization built from the ground up by recruiting specifically for BtoB sales. So, the question of how to transform the customer service skills cultivated in stores into the ability to solve corporate problems remains an unending battle and challenge for our company.

~To be continued in Part 2~

Interview conducted by D-POPS GROUP’s advisor Genta Sugihara.

D-POPS GROUP Co., Ltd.

Managing Director, Operating Officer, and Corporate Planning Head Takahiro Kato

Faithful Corporation

Company Co-President: Takahiro Kato
Address: 32F Shibuya Hikarie Building, 2-21-1 Shibuya, Shibuya-ku, Tokyo

Next, in the latter part of the interview, we discuss:

・Keeping busy as the Head of M&A
・The importance of people for D-POPS GROUP’s style of M&A
・The “flow of energy” that President Goto values
・“Realizing a Venture Ecosystem
・5-year vision
・And other topics

Be sure to check it out here:
https://d-pops-group.co.jp/en/column/kato-interview-latter-part/

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See Part 1 and Part 2 of the interview here. ◆The Move to Aoyama-Itchome and the Spirit of Altruism that Led to Appearing on TV Sugihara: You have been running your chiropractic clinic in the Aoyama district for a quarter of a century now. Could you share the story of how you relocated to your current spot? Yamaguchi: Actually, I originally opened my practice in Shibuya. However, back in those days, the area around Tower Records in Shibuya had aggressive street hawkers who would even grab women by the arm to try and sell something to them. My patients would frequently give me feedback such as, “Today as well, I got intercepted twice on my way here,” or “The streets are so crowded, it’s not easy to walk down them.” I decided it was time to find a new location, and at the time, I noticed that areas like Omotesando and Gaienmae already had chiropractic clinics with active websites, but Aoyama-Itchome had none. 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We also host seminars tailored to interested parties as well as to those aiming to become educators. ◆Lectures at the Open University of Japan: The Secret Behind a Course So Popular, It’s Lottery-Based Sugihara: Something else you’ve been doing for many years is teaching at the Open University of Japan. What kind of audience are your courses geared toward, and what are they about? Yamaguchi: Initially, I taught a course titled “Posture and Health”. Later on, I handed that class over to a younger instructor from our association, and now I teach a course titled “Building an Undefeatable Body with the Study of Posture”. Not many students of the Open University of Japan are pursuing a college degree; most of them are after personal and social enrichment. A lot of them are in their 40s, 50s, and 60s, you know. My course doesn’t include any aspect of chiropractic medicine at all. Sugihara: So it’s designed for those from the general public who seek enrichment. It must be very popular. 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We are building a platform where companies both within and outside our group are supported not just through funding, but through sales cross-promotion, talent recruitment, etc. Do you feel like any of these have something in common with your initiatives, or are there any points you particularly resonate with? Yamaguchi: Where I deeply resonate with your vision is looking at the overall flow and connections, rather than focusing on a single, isolated part. For us chiropractors, too, if a patient bumps their elbow and experiences numbness in their pinky finger, for example, we don’t just treat the pinky; we analyze their posture overall to figure out why that happened. Similarly, for stiff shoulders, we look beyond the shoulders themselves, checking the height of their computer monitor, their chair’s position, and their environment in general to help their shoulders get better. I feel like where your perspective aligns with mine is the way we look at something through its connections. 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[Founder Interview #6] Hiroshi Yamaguchi (Aoyama-Itchome Chiropractic Clinic) – Part 2
The Body is an Executive’s Precious “OS”: Maximizing Productivity by the Investment of One’s Posture In this second part of our three-part interview, we dive deep into the profound impact that loneliness and mental stress can have on executives’ physical bodies. We reveal the striking parallels between a professional’s perspective—analyzing patients’ walking style, facial expression, and tone of voice before they even sit in the chair—and an investor’s evaluation of an entrepreneur’s “human OS”. Director Yamaguchi also shares the fundamental, biological truth that posture and facial expression mutually reinforce each other, and he opens up about the exact moment that set him on his lifelong path to chiropractic medicine. (This interview was conducted in March 2026.) If you haven’t read Part 1 yet, you can do so here. ◆An Entrepreneur’s Body is Like an “OS”, and Posture is an Investment towards Maximizing Productivity Sugihara: I believe this topic is incredibly vital for young entrepreneurs in the IT and tech sectors. Many of these founders belong to a generation that has had a smartphone in their hands for as long as they can remember. Could you break down what happens when you have poor posture in a way that speaks directly to them? Yamaguchi: As I emphasized earlier, I want leaders to view correcting their posture not simply as a health routine, but as a direct investment to ensure the success of their current business—an investment to maximize their productivity. For corporate executives and others who work in startups, your physical body is like your OS (Operating System). No matter if you have amazing software (i.e., your skills and strategies), they’re meaningless if the underlying OS isn’t running smoothly. That OS is your own body. Sugihara: Right, if the OS is full of bugs, you won’t be able to realize the framework you’ve envisioned in your head, even if you have great apps. Yamaguchi: Precisely. While your health is not all about posture, posture is still a deeply important part. That is the exact message I want to convey. ◆Stress Stiffens the Body: the Mechanism of Mental Fatigue Sugihara: Within D-POPS GROUP, we have 25 group companies and have invested in about 30 other portfolios. Their leaders are all working incredibly hard across various fields to solve pressing social issues. However, various forms of pressure—such as cash flow issues or HR problems—start to hit once people step into an executive role, yet many find themselves in a position where they can’t talk about it with anyone. Call it the loneliness of leadership if you will, but they have to persevere while carrying burdens they can’t share. Does this kind of condition easily contribute to physical ailments? Yamaguchi: There is physical fatigue, which comes from holding up or carrying something. But there is also mental and emotional fatigue; the exhaustion caused by constantly having to be overly mindful of others, the pressure of endless problem-solving, or being caught in the middle of conflicting parties. This also can cause muscles to stiffen. In fact, while physical fatigue can be relieved to some extent by moving and stretching, mental fatigue often causes a greater effect on the physical body. Take the old Japanese idiom, “Drowning in debt so deeply your neck won’t turn”. Continuously worrying about something or experiencing hardships one after another causes your neck and shoulders to become incredibly stiff, leading to insomnia, migraines, etc. People in ancient times were purposely verbalizing those exact physical symptoms. That phrase describes one of the classic physical symptoms triggered by extreme stress. When the idiom was coined, the word “stress” didn't even exist, but to put it in modern terms, “stress physically prevents your neck from turning”. I once treated a CEO from a foreign company who didn’t know much Japanese. Suspecting that his chronic headaches and neck pain were purely stress-induced, I asked him in English, “How do you like your new boss?”, to which he replied, “He’s a pain in the neck.” In Japanese, the equivalent phrase would directly translate to ‘He hurts my head’, but it’s clear that in both Japanese and English, people express the biological truth that stress targets the neck. ◆Cranial Nerves Directly Affect the Neck and Shoulders: the Biological Mechanism of Stress Sugihara: So, continuing to internalize all that pressure will impact the body. Yamaguchi: Exactly. People who spend an entire day working alongside someone they have to tiptoe around or completely clash with, they’ll often have stiff necks and headaches by evening, even if they weren’t sitting down. That isn’t physical exhaustion; it comes entirely from emotional fatigue. The reason for this is that most movements below the shoulders are controlled by nerves originating from the spinal cord—a body part with no emotions—so no matter how mentally exhausted or stressed you are, your arms or legs won’t suddenly refuse to move. However, motions in the head, neck, and shoulders are connected to the cranial nerves, which emerge directly from the brain itself, which processes your emotions. Mental stress, anxiety, frustration, and worry travel directly along those nerves, causing the muscles in the neck and shoulders to immediately tense up. There are 12 pairs of cranial nerves. Among them, the 11th pair—known as the accessory nerves—directly stimulates the major muscles responsible for moving the neck and shoulders, such as the sternocleidomastoid muscle. When this specific nerve is compromised by emotional stress, your neck won’t turn and your shoulders become as hard as rocks. Also, nerves come out of either the left or the right sides of the body. If a right-handed person experiences tension exclusively on their left neck and shoulder, there’s a chance that it’s not being caused by a behavioral habit like how they hold their smartphone, but rather, it might be resulting from a cranial nerve. ◆The Path from Young Train Enthusiast to Chiropractor Sugihara: Spoken by a true professional, ha ha. By the way, had you been aiming for this specific career path since your student days? Yamaguchi: No, not at all, ha ha! Back in my student days, I was completely obsessed with steam locomotives. I spent all my time traveling across Japan, from the wilderness of Hokkaido down to the southern tips of Kyushu, just to take photos of trains. I was a total fan of train photography. But since I had absolutely no money, I traveled on an incredibly grueling budget and schedule. I’d catch a train at midnight, scramble to make a transfer around 3:00 AM, and finally arrive at my destination around 6:00 AM. Combined with the return trip home, it was quite rough on my body. My family home was in Shinjuku, so I would frequently drop by the Kinokuniya bookstore to stand in the aisles, using books about stretching as references. Even after graduating from university, that habit of visiting Kinokuniya stuck with me. One day, while wandering through the orthopedics section, I found a book written by a chiropractor titled Improper Backbone Shape Triggers These Illnesses. When I picked up that book, I had no idea what was inside, but it became the very reason why I entered the chiropractic world. The book’s contents were absolutely fascinating to me. Until that moment, I had always assumed physical pain was exclusively caused by overdoing things or bumping into something. But this book claimed that poor posture alone could cause problems for all sorts of body parts. I found it so intriguing that I immediately called the phone number printed in the book, and they pointed me toward an institution where I could actually study chiropractic medicine. ◆Quitting a Job, Working Part-Time Every Night, and Studying until Morning Yamaguchi: I agonized over the decision for a few months, but I finally made up my mind, quit my corporate job, and worked part-time while studying. At the time, I worked at Potomac, a traditional-style coffee shop inside the Akasaka Prince Hotel. My shifts ran from 4:00 PM until 12:30 AM. Afterward, I’d get a ride back to my home in Waseda and keep studying until daybreak. However, that study schedule didn’t bother me in the slightest. Perhaps because my sympathetic nerves were stimulated from my part-time job, I was able to stay very focused deep into the night. Just like when I was studying for university entrance exams, my brain was operating at full power. Every single day, I would completely lose myself in anatomy textbooks until dawn. Just as it was becoming light outside and people were starting to walk around, I’d fall asleep. Then, I’d wake up in the afternoon, and head back to work again. Looking back, I sometimes wonder if my father’s experience as a combat medic treating wounded soldiers in the war got passed down to me through DNA or something. He wasn’t a military surgeon, but as a combat medic, he still treated countless individuals under extreme pressure. I am not a medical doctor either, but the fact that I have dedicated my life to preserving people’s health makes me feel connected to him somehow. Sugihara: How many years ago did you first become independent? Yamaguchi: My first time trying to go independent was about 40 years ago. I was naive, so I simply registered my home address as a chiropractic research institute and mailed advertisements to dozens of companies listed in the quarterly business journal. I remember pouring a drink and eagerly waiting by the phone to see how many responses I’d get…but of course, there weren’t any, ha ha. There were no personal computers back then, so I had simply typed a plain text document on a word processor. No diagrams, and no one whom I could use as a reference. It was just a letter stating, “I wish to help meet the health needs of your company’s employees.” However, when I shared what I was doing with my mentors and close friends from university, three of them actually went out of their way to negotiate with their respective employers. They managed to get permission for me to utilize their companies’ medical rooms and employee lounges once a week or twice a month. Instead of having to force my way in, I was able to build up my practice through those companies officially. Later on, I was contacted by a famous practitioner in Shibuya who recruited me into one of Japan’s top-tier chiropractic clinics. Their clients were prominent figures from various fields, including three former Prime Ministers, professional athletes, executive members of major businesses, major real estate companies, and the aviation industry, well-known celebrities, etc. Sugihara: And you call that your ‘training period’? Ha ha… Yamaguchi: Yes, that really was my training period before I went independent. At that clinic, some of the patients wouldn’t pay any attention to me, but when the director entered, they would smile happily and start a conversation. When I saw that, it ignited a fighting spirit inside me. After all, it was perfectly natural that none of them would be particularly interested in talking with a young kid, since they were coming to see the director, who they felt would keep their bodies in good health. At some point, I had the thought that I would become like him someday. ◆A Professional’s Perspective: Analyzing a Person through Walking Style, Facial Expression, and Tone of Voice Sugihara: In your line of work, dialogue must be a critical component of administering an effective treatment, right? Yamaguchi: It is absolutely necessary. Observing the way a patient walks through the door, their responsiveness when speaking, or any subtle deviations from their usual baseline is part of the treatment, not just the physical adjustment. Keep in mind that patients who are bordering on clinical depression, for example, present themselves with a rounded spine and a downward gaze the moment they enter. Even the person’s response to a greeting can signal that something is not right. I approach every treatment by holistically evaluating a person’s walk, sitting posture, facial expression, and voice. Sugihara: I resonate with that deeply. Back when I worked in business development, and even now when I interview entrepreneurs as an investor, it is exactly the same. Naturally, I ask structural questions about their business model, market domain, and technical solutions. However, what I am truly analyzing is the expression on their face when they walk into the room, the level of confidence radiating from their answers, and the way their eyes light up when you hit them with a poignant, spot-on question. My primary goal is to thoroughly evaluate the individual’s underlying OS. It’s the same sort of evaluation. Yamaguchi: I actually conducted a survey among students at Waseda University regarding their impressions of individuals with rounded backs. The overwhelming responses were descriptions like “lacks confidence”, “frail”, or “looks like life isn’t going well”. Furthermore, a slouched posture is a primary reason people look prematurely aged. Conversely, an upright, elongated spine not only projects youthfulness but physically lifts the muscles that control facial expression and optimizes blood flow to the brain. When posture collapses, cerebral blood flow stagnates, causing brain activity to decelerate. Correcting your alignment is truly a strategic investment that simultaneously optimizes both your internal state and your external presence. Sugihara: Absolutely, a slouch immediately projects a lack of confidence. I pay close attention to facial micro-expressions during interviews as well. Occasionally, someone will give off a distinct negative vibe or energy. No matter how eloquently they speak, it makes me pause and reconsider forming a deep partnership with them. Alternatively, when reconnecting with an entrepreneur after a while, even if they say, “I’m doing great,” I will cross-reference that statement against their posture, eye strength, and overall expression. If I sense an underlying misalignment, I gently prompt them to tell me if anything is wrong, and adjust how I interact with them if necessary. Yamaguchi: Facial expressions dictate your physical state, and your physical state dictates your facial expressions. This goes both ways. For example, when a patient’s stomach lining is inflamed, the distress often manifests as acute tension in the upper back. While I cannot physically massage someone’s internal organs, relieving the tension in the back muscles can indirectly soothe the stomach. The same principle applies to depression. By physically unburdening and loosening the spine, I can often alleviate some of the emotional weight clouding the mind. The body and the mind are profoundly and inextricably linked. ~To be continued in Part 3~ Interview conducted by D-POPS GROUP’s advisor Genta Sugihara. Aoyama-Itchome Chiropractic Clinic Director: Hiroshi Yamaguchi Address: 740 Win Aoyama, 2-2-15 Minamiaoyama, Minato, Tokyo Website: https://aoyama1.jp/ Next, in the third part of the interview, we discuss: ・The move to Aoyama-Itchome and the spirit of altruism that led to appearing on TV ・Essential reasons why business leaders must be healthy, according to Soichiro Honda ・Similarities with a Venture Ecosystem ・And other topics Be sure to check it out here: https://d-pops-group.co.jp/en/column/aoyama1-yamaguchi-part3/
  • Interview
2026.05.29
[Founder Interview #6] Hiroshi Yamaguchi (Aoyama-Itchome Chiropractic Clinic) – Part 1
Before Your “Health Circuit Breaker” Trips: What Executives Need to Know About the Body’s Warning Signs and the Power of Posture For this installment, we interviewed Director Hiroshi Yamaguchi, a chiropractic professional with a career spanning nearly 40 years. After encountering one single book, Dr. Yamaguchi quit his job to pursue chiropractic medicine, studying while working part-time jobs in the evenings, and began working at a chiropractic clinic in 1987. Driven by a desire to practice a treatment philosophy aligned with his own values, he went independent and opened the Aoyama-Itchome Chiropractic Clinic, which has been operating to this day. He has treated a cumulative total of over 90,000 patients. As a director of the Japan Posture Education Association, he has taught courses at the Open University of Japan and appeared across various media platforms, serving as a prominent figure in the field for many years. We sat down with Director Yamaguchi to learn a professional’s perspective on why leaders ought to consider their bodies as an asset, which provided critical insights for building a Venture Ecosystem. (This interview was conducted in April 2026.) ◆What is a “Health Circuit Breaker”? — The Moment the Body Hits Its Limit Sugihara: One passage from the pre-interview report you shared with me left a deep impression on me. “For people who work incredibly hard, even if they aren’t sick, sometimes their physical health will very suddenly fail. I think of this as a “health circuit breaker” tripping. To use an electrical analogy, it’s like running your appliances right at maximum capacity, and the moment you turn on the microwave, the breaker trips.” I think a lot of people have seen this happen to themselves or their coworkers. Could you elaborate on the intent behind these words? Yamaguchi: When you are throwing yourself entirely into your work, you are usually aware that your body is tired. But if you aren’t experiencing actual pain, how do you react to that? Most people think, “If it doesn’t hurt, I must be fine. I can keep going.” This sort of “no pain means I’m fine” mindset is exactly what makes it easy for your health circuit breaker to trip all of a sudden. Even when the body is fatigued, even when joints are stiffening and muscles are swimming in lactic acid, it can still maintain high performance. This is because the body secretes “hustle hormones” like adrenaline to override the fatigue. Furthermore, the brain has a built-in filter that blocks out minor discomfort signals so they don’t disrupt our focus. In fact, if our brains didn’t do this, we wouldn’t be able to get any work done. To return to the electrical analogy, if an average person operates on a 30-amp capacity, an adrenaline-fueled executive’s capacity gets up to nearly 60 amps. Even while using a massive amount of electricity, the breaker doesn’t trip. However, because a person like that is running so close to the limit, the smallest, most trivial thing could suddenly blow the entire circuit. What I hope is that leaders will intervene before their bodies reach that point. ◆The Body Speaks in Tension and Stiffness, Not Words Yamaguchi: At the stage where you start thinking, “Am I using too much power?” like in the electrical example, tension and stiffness are the body’s signals. I want people to catch themselves at that exact stage and do something about it. Your body cannot communicate in words. Instead, it uses stiffness and tightness to tell you, “I’m exhausted”. For example, it can’t say, “If you stay seated for another 30 minutes, your lower back is going to seize up when you stand.” Instead, it gives you a heavy, dull ache while you sit. Your body gives you these kinds of signs. The thing that’s dangerous to do is to mask that discomfort with painkillers and keep pushing. There was a case where a patient repeatedly took medication to numb back pain and be able to keep playing golf, only for it to escalate into excruciating agony. The person finally went to the hospital, and learned it was a compression fracture. This is the equivalent of a small fire breaking out in your house, the smoke detector going off, and you disabling the alarm because it’s too noisy. If you ignore the warning, the entire house burns down. I am by no means anti-medication; it is absolutely necessary. However, using medicine solely to silence pain so you can continue working past your limits will result in damaging your body. Sugihara: I am sure this hits home with many of the executives and hard workers reading this right now. There must be a lot of people who experience a dull, lingering ache in their backs that they don’t think they could convey to a doctor even if they went to a clinic, but then the moment their stress levels drop, it vanishes naturally. At least, I know I myself experienced that during times when I had a lot of stress, ha ha. ◆What Diverse Leaders from Office Workers to Cruise Ship Captains Have in Common Sugihara: For our second question, from what professional backgrounds do Aoyama-Itchome Chiropractic Clinic’s patients come? Yamaguchi: The majority of my clients are everyday office workers and homemakers. However, I also treat a significant number of business executives and high-profile leaders. For instance, the captain of one of Japan’s largest luxury cruise ships is a regular patient. While a cruise ship’s route is predetermined, it is the captain’s responsibility to assess the waves and wind conditions in real time, deciding whether to steer slightly ahead or take a wide detour, and ensuring the passengers enjoy the safest, most comfortable voyage possible. In short, they are the ultimate decision-makers responsible for thousands of lives. Because of that heavy burden, they realize their own bodies must remain healthy. That is the mindset that brings them to my clinic. Sugihara: That’s a great point. To use a corporate analogy, the ship’s crew members are the employees, and the passengers are the customers receiving the service. The captain is the President or CEO. If the person at the top isn’t healthy, you simply cannot provide a safe, high-quality service. Yamaguchi: Precisely. Businesses are the same way. I also treat a woman who served as a top executive for a world-renowned theme park. She oversaw multiple massive divisions, including the theme parks, retail shops, music, and films, and she achieved incredible results. Even though she is highly dedicated to her own personal fitness training, she visits us regularly in order to keep up her physical condition. She once told a friend of hers, who was the CEO of a TV network, “The only reason I can perform this job properly is because I have a chiropractor looking after my body.” The role of chiropractors is to act as the behind-the-scenes supporters who help leaders to be able to succeed and smile, so hearing that was incredibly rewarding. Another long-time regular is a legendary broadcasting executive who led Japan’s massive transition from analog to digital television. The switch required replacing every single piece of broadcasting equipment and receiver in the country. He had to negotiate extensively with major electronics manufacturers, saying, “The networks are switching to these specifications, so you need to build products that match them.” For the manufacturers, making massive financial investments to build new factories in an uncertain climate was an immense risk. One of his subordinate directors later visited my clinic and admitted, “I could never have pulled off a negotiation that intense.” So, the fact that we enjoy seamless digital broadcasting today as a matter of course is entirely due to the grueling efforts of leaders like him. He came to us during a time when his body was under severe physical strain, and I am profoundly grateful I could be of some help. I urge everyone in your Venture Ecosystem, please take care of your bodies. Despite their demanding schedules, many of the executives who visit us make time for sports and hobbies—golf, tennis, mountain climbing, playing musical instruments, and so on. I like to ask them, “What do you do with your sports gear or instruments after you finish using them?” Almost all of them reply, “Of course, I clean and maintain them thoroughly before putting them away.” It certainly feels good to see your beloved tools looking nice and clean. Now, all I’m asking is for you to take just a fraction of the care and respect you show your gear, and direct it toward your own body. Strangely, many leaders meticulously maintain their equipment but leave their own bodies pushed to the absolute limit. If you keep stacking task after task onto an exhausted body and falling asleep without first winding down, fatigue will build up until it manifests as severe, debilitating symptoms. Even if it’s only for a brief moment in between tasks or after getting home, slowly stretching your joints and muscles will improve blood circulation and be beneficial to your health. ◆The Terrible Experience and Perception of Posture Both Shared by Executive Regulars Sugihara: You’ve shared several fascinating case studies of high-level leaders. Assuming their initial visit to your clinic was triggered by acute physical discomfort, do they typically continue to visit you on a regular basis? How do they end up there? Yamaguchi: Of course, I get many patients who only walk through my door after their circuit breaker has already been tripped. However, there are plenty of corporate executives who establish a routine of regular visits explicitly to prevent that breakdown from happening in the first place. The reason is simple: almost all veteran leaders have suffered some sort of terrible experience at least once in their past. They know from firsthand experience that if you wait until the system crashes to seek help, the pain is severe, it takes time, and it costs money as well. They have learned for themselves that regular maintenance ensures that symptoms remain mild or are prevented entirely. The more seasoned the executive, the better they understand the strategic value of regular checks and corrections. Unfortunately, they almost always have to go through a painful experience to learn that lesson initially. It is easy for people to respect conditions like bone fractures because the pathology is visible on an X-ray. Conversely, it’s much harder to keep in mind the compounding value of maintaining proper posture and proactively conditioning the body. People frequently interpret good posture as simply one type of hygiene, but actually, I want to tell people that keeping proper posture is an investment that leads to the success of what they’re doing now. Companies have a leader at the top, the directors, the employees, their families, clients, and shareholders. The physical vitality of that leader directly dictates the performance of the entire organization. Therefore, health is an investment towards realizing your corporate vision. ◆The Mechanics of Poor Posture: What Happens When We Stop Moving? Sugihara: Depending on the industry, leaders face vastly different physical environments. Some stand all day, while others are entirely sedentary. For executives, sitting in a boardroom for a five-hour marathon meeting is part of the job. What kind of negative mechanical impact does prolonged poor posture have on one’s physical health? Could you walk us through that specific mechanism? Yamaguchi: To put it basically, humans are animals. As the word suggests, we’re supposed to move. *Note: ‘animal’ in Japanese is dobutsu (動物), which literally translates to ‘moving thing’. When you sit for hours without moving, freezing your joints and leaving your muscles unengaged, your blood circulation stagnates. Blood is the transit system responsible for delivering oxygen and vital nutrients throughout the body while carrying away metabolic waste. What happens when that infrastructure stalls? Imagine forcing an employee to work from dawn until dusk while denying them meals and locking the restrooms. Anyone would collapse under those conditions. When you sit continuously and restrict your blood flow, that exact same systemic deprivation is occurring inside your tissues. Specifically, habits like crossing your legs or staring down at a low monitor compound this structural stress. The point I emphasize most heavily to patients is the layout of the environment where they spend the vast majority of their lives: the height of the chair, the height of the desk, the position of the monitor, and the ergonomics of the keyboard. This setup is critically important. Not just for five or ten minutes, you are locking your body into these positions for hours on end, so how it’s set up has an immeasurable impact on your body. Sugihara: I try to be mindful of it, but maintaining perfect posture over a long period feels incredibly difficult. Before I know it, my alignment slumps. Furthermore, modern business professionals can accomplish work via a smartphone, so is it definitely bad to have a posture that’s looking down? Yamaguchi: When you use a smartphone and tilt your head forward by 15, 20, or 30 degrees, the burden on your neck increases dramatically. It’s said that the posture typical of smartphone usage can be equivalent to placing roughly one-third of your entire body weight directly onto your neck and shoulders. The human head alone accounts for approximately 10% of your total body weight. Think of it like holding two 2-liter plastic water bottles. If you hold them tightly against your chest, it requires very little effort. But if you extend your arms straight out in front of you and try to hold those same bottles, the physical leverage multiplies the strain. Your muscles will give out in less than five minutes. That exact compounding fatigue is what accumulates in your upper back and shoulders every time you look down at a screen, triggering chronic shoulder stiffness, tension headaches, and an inevitable drop in mental concentration. The above illustration shows how much the tilt of one’s head impacts the strain on one’s neck. ~To be continued in Part 2~ Interview conducted by D-POPS GROUP’s advisor Genta Sugihara. Aoyama-Itchome Chiropractic Clinic Director: Hiroshi Yamaguchi Address: 740 Win Aoyama, 2-2-15 Minamiaoyama, Minato, Tokyo Website: https://aoyama1.jp/ Next, in the second part of the interview, we discuss: ・An entrepreneur’s body is like an “OS”, and posture is an investment towards maximizing productivity ・Stress stiffens the body – the mechanism of mental fatigue ・The path from young train enthusiast to chiropractor ・And other topics Be sure to check it out here: https://d-pops-group.co.jp/en/column/startupecosystem-part2/
  • Interview
2026.05.27
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