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“A Day to Change an Entrepreneur’s Future”: The Frenzy Behind the Scenes of Venture Ecosystem Summit 2025 – Part 2

  • Interview
2026.02.26

For this article, we interviewed President Goto, the organizer of Venture Ecosystem Summit 2025 held in October 2025, along with the operational committee’s three leaders.

(This interview was conducted in December 2025.)

This is the latter part of the interview. To read the first part, click the link below.
https://d-pops-group.co.jp/en/column/ves-behind-the-scenes-part1/

◆The Social Gathering

Sugihara:
The reception was way different from a typical post-seminar mixer, featuring highly polished, 90s-era music and live performances along with carefully curated food and drinks. I imagine your extraordinary attention to detail was at play here as well, President Goto…could you tell us more?

Goto:
Originally, I wanted to create a space where people could enjoy a drink while listening to top-tier live music. I initially considered jazz, but I felt that standard jazz bands could be found everywhere. So in the pursuit of something more edgy and stylish, I looked to our group company opzt’s CEO, President Akamatsu, for some suggestions.

When he asked what kind of artists I had in mind, I told him I was thinking along the lines of legendary artists from the 90s with whom our generation was obsessed during our school days. He gave me several proposals, but because I was so particular, I rejected all of them, ha ha.

Finally, he said, “If you say so, I’ll try to negotiate with the two bands that you said were the coolest!” In the end, he managed to secure both legendary performers whom I had admired since my youth. These artists still have a massive fanbase today, and their concert tickets sell out instantly regardless of the price. I wanted to give a sense of nostalgia to the generation in their late 40s and older, and at the same time, show the younger generation that music in the 90s was this cool.

Since we didn’t compromise on the music, the drinks had to be on that level, too. I decided to provide a separate selection of beverages out of my own pocket. Since the room would be full of CEOs with sophisticated palates, I wanted them to be genuinely satisfied. I consulted an acquaintance of mine, President Okazaki of Five Needs, whose business deals with alcoholic beverages, and what we produced was “Goto’s Bar”.

Standing as an addition to the venue’s standard hotel lineup, our extra-special Goto’s Bar featured truly premium selections, including wines from Napa Valley’s Kenzo Estate, which I personally love. It was a combination of the music and drinks that I consider the absolute best, and I believed this pairing would allow everyone to have a truly sublime experience.

Sugihara:
It sounds like a truly sophisticated social gathering. I also heard some wonderful stories from the after-party later that evening.

Goto:
That’s right. President Sugimoto, the founder of Positive Dream Persons (PDP) who gave the toast at the reception, arranged to host the after-party at a restaurant operated by his company called The Tender House. He let us use an entire floor exclusively, and invited not only participants from the summit, but our management team as well.

As the party reached its peak and I went to settle the bill myself, one of the entrepreneurs I mentored stood up and proclaimed, “We can’t let President Goto pay any more than he already has. I’ll collect the funds from everyone!” Then, President Ikeda, the founder of Will Group who gave the toast alongside President Sugimoto, stepped in saying, “No way, I’m paying for all of this!”, and proceeded to take care of the entire restaurant bill.

I was deeply moved and overjoyed by both of these gestures from two businessmen who I respect from the bottom of my heart.

Sugihara:
Since the seminar and the social gathering afterward were both so full of particulars, coordinating all of that with the hotel staff must have been incredibly precise. Do you have any untold stories from the preparation process?

Shibata:
Our operational committee meetings began in earnest way back in December 2024. To be honest, since I had only handled internal company events until then, there were moments when I wondered, “Do we really need to start preparing this far in advance?” But when I look back now, putting things into motion that early was absolutely the right call.

The six months leading up to the event were a whirlwind. Beyond the food and drinks President Goto mentioned, we were obsessively meticulous about the seating chart. We debated whether to have eight or nine chairs per table. Since you can’t get a real feel for the space just from a blueprint, we visited the venue multiple times with President Goto to actually line up chairs and sit in them. We spent a lot of intensive time verifying every detail, asking ourselves, “Will this spacing feel cramped, or will our guests be able to truly relax?”

Also, regarding the setup of Goto’s Bar, we faced the practical issue of the hotel’s corkage fees. While we wanted to provide our own selection of alcohol, the hotel also needs to ensure their business remains profitable.

So, I simply told the hotel staff this: “The participants in this event are CEOs who lead companies ranging from hundreds of millions to hundreds of billions of yen in scale. If they find this venue wonderful, there is a very high probability it will lead to future business for you.” The hotel staff understood the meaning behind my words, and ended up showing us flexibility by waiving the corkage fees, for which we were very grateful.

One more thing: because hotel staff are busiest on weekends, most of our communication happened then. As the date approached, I couldn’t let go of my phone for a single moment, even on Saturdays and Sundays. I had to make numerous unreasonable requests and last-minute adjustments, but after the event, a member of the venue staff told me, “Even from our hotel’s point of view, this was a truly magnificent event.” Hearing that, I felt very glad, like all our efforts were totally worth it.

◆Operational Committee Members

Sugihara:
On the day of the event, about 20 members from various companies in D-POPS GROUP were hustling together as a unified support team. I heard there were a number of very thorough preparatory briefings…Mr. Matsutani, you were in charge of managing the proceedings, and it seems you were the one who created all of the highly-detailed documents for informing the other committee members. Did you learn anything about team collaboration you’d like to tell us?

Matsutani:
To be honest, for more than half of the operational committee members, it was my first time to work directly with them. At first, I was a little worried they might wonder, “Why is this guy in charge?”, ha ha.

However, this event was something President Goto built with intense passion and a focus on the smallest details. I believed the most important job for management was how accurately we could share that information with the team.

Rather than just to put on an event without anything going wrong, our ultimate mission was to create an experience that could change an entrepreneur’s future. To achieve that, I felt it was vital to explain the reasons behind every specific detail—why the banners were in those specific spots, or why the seating was arranged just so.

I saw myself as the bridge between President Goto’s vision and the other operational committee members. To convey that passion accurately, it naturally became necessary to provide such detailed explanations.

Also, for roles like holding guidance signs near the station, it’s a lonely task out of sight of the other staff. From my own experience, I know it’s easy for one’s focus to slip in that kind of environment. To ensure the team saw it as their own mission, I made sure to communicate the significance of those roles and asked for their full commitment beforehand.

Sugihara:
It was every member’s high level of awareness that enabled such smooth operations, for sure.

Matsutani:
In fact, we had only one meeting with the entire team before the event, and one more on the morning of. There was simply no time to give every single instruction. Therefore, I consolidated the information, gave it to each sub-group leader, and told them, “I’m relying on you to make the final judgment calls on the ground.”

Even so, everyone performed beyond expectations, from sincerely greeting guests while holding guidance signs, to welcoming late arrivals without hesitation. I am convinced that the committee members were able to act autonomously and provide excellent service above and beyond the call of duty because D-POPS GROUP’s high importance placed on empathy is so deeply ingrained in every employee.

◆Event Merchandise and Visuals

Sugihara:
Rather than being just the result of numerous briefings, this was the natural outcome of the everyday considerate attitudes of all the committee members…truly wonderful.

Additionally, the quality of the creative work was striking, from the special pre-launch event website to the booklets, binders, T-shirts, and the video introductions for Dr. Semmoto and Ambassador Fujisaki. How were these materials produced?

Kawaguchi:
For the website, booklets, and merchandise, we received immense support from idealump, one of our group companies.

Since they also manage our corporate website, they have a deep understanding of not only our design preferences, but our vision and philosophy as well. When we told them the concept was to make this a day that changes the future for entrepreneurs, they were incredibly quick to grasp our intent, which was very reassuring.

However, President Goto’s attention to detail goes deeper than most would imagine. One example is the splash design in the Speakers section of the event website. Originally, it was a bit more rounded, but that wasn’t exactly what he had in mind. He strongly felt that as the unicorn’s splash, it needed to have sharper, more energetic lines, as if it had just crashed through something with all its strength. We went back and forth with idealump many times refining the design until it expressed the kind of power that President Goto was envisioning. Because he pours his own soul into the details, I felt a strong urge to see those details materialize, and the creators responded accordingly. I am truly grateful we’ve been able to form that kind of relationship.

Sugihara:
All the videos were also spectacular.

Kawaguchi:
The opening movie and the introduction videos for Dr. Semmoto and Ambassador Fujisaki were produced by Point Zero. We were introduced to them by President Sugimoto of PDP, who was mentioned earlier, and they have been handling our company’s videos for years.

Before they produced the videos for the summit, President Goto met with them and told them directly about the thought he had put into the event and the message he wanted to convey through these videos. Then, because the people at Point Zero have been accustomed to his preferences for such a long time, when they created the first drafts, President Goto approved of basically all of them. The quality they delivered far exceeded our expectations.

We could never have created the setting for this event without idealump and Point Zero’s cooperation. I am truly glad that we’ve encountered such wonderful partner companies who come alongside us and our vision.

◆Insights Gained While Working with President Goto

Sugihara:
It’s clear that President Goto’s extraordinary passion and decisiveness resided in every single detail. I’d like to ask all three leaders of the operational committee, what did you feel or learn while accompanying President Goto during these preparations? Let’s start with Mr. Shibata.

Shibata:
Indeed, through various meetings and training sessions, I’ve had many opportunities to learn from President Goto, but actually, in all likelihood, this was my first time to work closely with him on an actual business task.

While I was working beside him, what overwhelmed me from the bottom of my heart was his staggering level of professionalism. I’ve been told since the day I joined the company that “our work is in the details”. I made a conscious effort to maintain a high standard for greeting customers and keeping store facilities clean and organized, believing that was an adequate level of awareness.

However, the degree of enthusiasm and zeal President Goto applies to those details…until this project, there had been no opportunity for me to perceive that essence with my own eyes. From his consideration for every single chair on the seating chart to every single dish on the menu, this event allowed me to witness a level of thoroughness that made me think, “He’s really checking this?” or “He’s going this far?” I felt in my bones that the reason he has such a powerful and loyal circle of supporters behind him is because he pushes through to complete a task by scrutinizing each and every detail.

Above all, his greatest strength is his professional determination to keep going until the very end, without ever backing down. This incredible attitude made me once again resolve to embody this same stance in my daily work no matter what.

Matsutani:
This was the first time to work directly with President Goto for me, as well. During the preparation period, I was constantly surprised by his level of obsession, just like Mr. Shibata was. For example, the seating chart wasn’t something that could simply be finished once we created it. He never stopped considering the specific relationships of every single attendee. Even after we thought it was settled, he adjusted it about five more times, saying, “I know we decided on this, but…let’s change the group sitting at this table anyway.”

When we’re on the production side of things, in most cases, our clients don’t think through the details to that extent. But with President Goto, his vision will always exceed your imagination as a producer, so you have to put your mind to its absolute limit just to keep up. Every time we cleared one challenge, his expectations would rise, and we had to keep responding at higher and higher levels. In the midst of this earnest and serious back-and-forth, I realized that this is the way to elevate the quality of one’s work.

And now that the event is over, as I look back, I’m struck by another thought. President Goto often asks, “Is there good energy flowing?” or “Is this attracting good fortune?” Since joining the group, I understood the meaning of those words intellectually, but I never had an experience where I felt, “This is it!”

However, through this event, I think I finally understand. The “good energy” that filled the venue and the overwhelming satisfaction of the participants—when you trace that back to its origin, you’re led to the store-based business D-POPS. In this day and age, many young people shy away from service-industry jobs, but it is a vital foundation that everyone would miss if it disappeared. That kind of work cultivates an attitude of obsessing over every cranny and nook, which is exactly what creates this good energy. This summit was an event that made me feel strongly, through such close proximity to President Goto, that we are creating a positive energy flow with our own hands.

Kawaguchi:
Unlike Mr. Shibata and Mr. Matsutani, I’ve had the pleasure of working alongside President Goto every day. So, from the moment he declared at last year’s all-hands meeting that we were going to host a summit, I braced myself, knowing things were about to get incredibly busy, ha ha.

I could predict the level of obsession the others mentioned; I knew nothing would be decided in a single go. I tried to use my experience to move ahead of schedule and approach everything with meticulous care. Nevertheless, this time President Goto’s passion was more intense than ever before…it felt like I was holding on for dear life.

Through this, something he’s always been teaching me finally clicked: “When you squeeze your passion and heat into something, it will reach people far more effectively than something you just threw money at.” Even if you spend a fortune on advertising to gather people, if there is no soul, nothing is communicated. This event was invitation-only, and we didn’t run flashy ads, yet the satisfaction level was incredibly high because it was totally infused with President Goto’s pure ambition.

The good energy that Mr. Matsutani mentioned filled the venue precisely because President Goto scrutinized and poured out his whole heart into every tiny detail. He was so thorough that a complaint like “This part is a bit weird” or “The service is bad” would have simply had no place. Because that passion was felt, participants are now spontaneously spreading the word that it was a truly great event. Feeling like our Venture Ecosystem’s circle of influence is expanding little by little through this event was the greatest reward for me.

◆Realizing a “Venture Ecosystem”

Sugihara:
Thank you. I believe that through this event, D-POPS GROUP’s vision of realizing a Venture Ecosystem was able to imbue itself in a lot of people. Finally, please share your current thoughts on achieving that goal.

Goto:
I feel that this day was truly the starting line for us.

In terms of building a Venture Ecosystem, I feel we have finally reached the entry point. The more we interact with those who are suffering from problems with business management—whether they’re entrepreneurs, executives, employees, or even their families—the more we see what needs to be done. It feels like there is an infinite amount of work ahead of us.

I am working with a strong desire to bring this Ecosystem into a concrete shape during my lifetime, but I am also aware that this is a staggering challenge. No matter how much we achieve, it doesn’t have an end. We could bring it to 80% or 90% completion, but at no point will it ever reach the point of being perfectly 100% complete. We’ll always feel there are areas where we wish we could have provided more support or other people we could have helped. There may even be cases where people we weren’t able to support adequately end up making a name for themselves as brilliant entrepreneurs.

In that sense, for us who are taking on this endless battle, I am convinced this summit was a major turning point—a moment to reflect on exactly how we should build the Venture Ecosystem moving forward.

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

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Our app eliminates that friction, allowing people to learn whenever they have a spare moment without any preparation. ◆Where SpeakBUDDY Differs from Duolingo and Speak Sugihara: Recently, we’ve seen a rise in similar services like Duolingo and Speak. Could you walk us through where SpeakBUDDY excels and what makes it unique compared to those other players? Tateishi: We have immense respect for Duolingo as a service. However, we view them more as a comprehensive learning platform focused on vocabulary and grammar rather than specialized for speaking. Because they prioritize gamification, they are an excellent entry point for beginners to engage with a new language as if they were playing a game. In contrast, we are hyper-focused on speaking. For the Japanese people who have studied English to some extent in middle and high school but still find themselves unable to speak, SpeakBUDDY is the more effective fit. Regarding Speak, the US-based AI app that also focuses on verbal expression, I believe we have the edge in two areas. The first is ease of use. Our UI and UX are meticulously crafted to be intuitive, making it easier for users to build a daily habit. The second is our scientific foundation. We’ve integrated rigorous Second Language Acquisition (SLA) theories into the very core of our design to ensure users achieve actual fluency. The fusion of these two elements is where we stand out. Sugihara: I’ve noticed the app can be quite persistent with having me review expressions right when I’m about to forget, ha ha. Tateishi: That’s the idea! Our review system is based on Ebbinghaus’ “forgetting curve”. We ensure that learning is reinforced through spaced repetition to guarantee retention. Packaging such high-level pedagogical expertise into an app is one of our greatest strengths. The other differentiator is in the name itself: the “Buddy”. While apps like Speak can feel like you’re talking to a somewhat mechanical interface, SpeakBUDDY is built on storytelling and rich character development. We’ve created a world where you interact with human-like IP (original characters) within realistic scenarios, and that fundamental philosophy sets us apart. Sugihara: The character design is certainly distinct. You encounter characters like a boss with a realistic Indian accent, which makes the conversation feel grounded in the real world. The entire app feels like one cohesive universe. Is this design aesthetic a point of particular focus for you? Tateishi: Absolutely. We are a company that is obsessed with design, and I take great pride in our incredibly talented design team. We even received the Good Design Award in 2021. Actually, our entire design team currently consists of international talent. I’ve always personally loved the type of UI/UX aesthetics found in the West, so having international designers lead the creative process is a defining characteristic of our product. At our core, we believe that consistency is key to language acquisition, and the key to consistency is enjoyment. Internally, we often use the terms ‘Buddy-ness’ or ‘Buddy sense’ to describe how we want every aspect of our app experience, from the characters to the interface, to embody a sense of companionship and rapport. ◆Over 300 Clients: Rapid Growth in the Corporate Market Sugihara: Have you been putting a lot of effort into developing your corporate client base? What kind of companies are adopting your services, and what are their primary objectives? Tateishi: We have focused heavily on corporate expansion over the last three years. Due to the increasing need for communication driven by corporate globalization, we have now surpassed 300 corporate clients. Most companies implement the service as part of their self-improvement programs or employee benefit packages. In terms of industries, while we naturally serve global enterprises, we’ve seen a recent surge across all sectors due to a recent trend towards management of human capital. More companies want to support their employees’ self-development through paying for our services. After all, there are people who genuinely want to improve their English in every company. We see a particularly high rate of adoption in the IT, manufacturing, and customer service industries. We already provide sector-specific content, and we plan to further strengthen our corporate-oriented curriculum moving forward. Sugihara: What kind of feedback are you getting from these companies? Tateishi: It’s incredibly rewarding to hear from HR managers that their employees no longer feel a resistance to speaking English or that they have begun participating proactively in international meetings. We often hear from HR and training coordinators that they have never seen such a positive internal response to an English training program before. Sugihara: I see, so the employees themselves are reporting their satisfaction back to the HR department. Tateishi: Right, and then the number of applicants for the program is often multiple times higher than the original estimated number of applicants. Apparently, the turnout has been up to ten times higher than for in-person English conversation training. I’m pretty sure the fact that you can start so casually, with such a low barrier to entry, must be a big factor. We’re also seeing significant adoption in the hospitality sector, such as hotels. With the rise in inbound tourism, SpeakBUDDY is proving very effective in lowering the so-called “English allergy” barrier for staff when international travelers drop by their shops or hotels. ◆More Employee-Friendly than Traditional English Training Sugihara: In many large Japanese corporations, English training often comes with rigid requirements, like having to achieve a specific TOEIC score. Tateishi: That’s true. Traditional corporate English training usually felt like a burden…you had to hit a certain score, or you might even have to pay for it yourself if your attendance was too low. SpeakBUDDY’s greatest strength is its ability to be offered to a wider range of people at a lower cost. Instead of a mandatory chore, it becomes an employee benefit that people want to take advantage of. Sugihara: That approach is only possible because so many of your customers study consistently. Is the corporate segment still growing at this point? Tateishi: Yes, it’s continuing to grow very rapidly. If there are any companies out there struggling with their English training programs, please do introduce them to us, ha ha! ~To be concluded in Part 3~ Interview conducted by D-POPS GROUP’s advisor Genta Sugihara. SpeakBUDDY, Ltd. President and CEO: Tsuyoshi Tateishi Address: 3F +SHIFT Nihonbashi Sakuradori, 3-14-3 Nihonbashi, Chuo-ku, Tokyo Established: May 2013 Website: https://www.speakbuddy.com/en In the third and final part of the interview, we discuss: ・Gathering all employees together for an honest confession of short funding ・Building a great company that balances autonomy and discipline ・Creating an AI language learning startup that will drive globalization in Asia ・And other topics Be sure to check it out here: https://d-pops-group.co.jp/en/column/speakbuddy-part3/
  • Interview
2026.04.21
[Founder Interview #4] Tsuyoshi Tateishi (SpeakBUDDY) – Part 1
From 280 Points on TOEIC to a Perfect Score and 5,000 Hours of Studying, Forming a Belief in the Necessity of AI English Conversation In December 2025, D-POPS GROUP invested in SpeakBUDDY Ltd., the developer and operator of the “SpeakBuddy” AI English conversation app. (Read more about it here.) How did someone who was once considered the worst English student in his grade go on to build a cutting-edge, AI-powered English conversation service? In this three-part series, we look into the entrepreneurial journey of SpeakBUDDY’s founder Tsuyoshi Tateishi and the future he envisions for language learning. In Part 1, we explore his incredible transition from a low TOEIC score of 280 to 5,000 hours of dedicated study, his experiences at a foreign investment bank, and how a trip around the world sparked the idea for AI-driven English conversation. (This interview was conducted in March 2026.) ◆“Worst at English in the Entire Grade” Sugihara: To start off, could you tell us what gave you the initial push to develop the SpeakBuddy app? Tateishi: First of all, the biggest reason I chose the field of English was because I was actually terrible at it during my student years. English requires consistent, cumulative effort, but I hit a wall in my first year of junior high school and just couldn't keep up with my classes after that. By high school, my teacher told me I was "the worst at English in the entire grade." Sugihara: So the student who was the worst in his grade became the CEO of an English conversation app company, ha ha! Tateishi: Exactly. That was my reality in high school, but the turning point came during my job hunt in university. I received a tentative offer from a foreign investment bank, and starting my career there was what finally forced me to start learning. Sugihara: It was a foreign-owned firm, so didn't they interview you in English? Tateishi: Oh, they did. The final interview was in a boardroom with the then-CEO of Citigroup Global Markets Japan and a row of executives from various departments. At the time, they were testing whether candidates could handle that kind of pressure. Since investment banking is a business where people are the only real assets, they were looking for character. That 10-on-1 interview was mostly in Japanese, but at the very end, the HR Director said, “Alright, I’m going to ask you a question in English, so please answer in English.” Up until that point, all the interviewers were Japanese, so they were probably assuming, “He graduated from Keio University, so he can probably handle it.” But in fact, my English was non-existent. My TOEIC score was only 280, so I knew I wouldn’t be able to understand any questions if they asked me in English, so I had prepared exactly one response in my head: “I can’t speak English. But I will study hard. So, no problem!” I said it with total confidence, but in fact, that single sentence was the only English I had learned. Back at that time, just memorizing that one phrase had been a struggle for me! The entire room of interviewers froze. Everyone was like, “Wait, what? You applied here with that level of English? This is a foreign firm…what are you expecting to do?” However, this was during my third year of university, so I told them, “I still have one year until I graduate.” At the time, I had just become the youngest person that year to pass the CPA exam at age 20. I was studying 14 hours a day…other than study and sleep, I would spend only two hours a day to shower, eat, and commute. I was used to finishing an entire textbook in a single day. So, I truly believed it when I told them, “I have a year, and that’s enough time for me, seriously.” At the time, I figured if I could get a 750 on the TOEIC, I would be basically fluent. Compared to the CPA exam, where if you fail, you have to wait another year, I felt no pressure at all. When I said, “I’ll start tomorrow”, they looked at me and said, “You do look like the type of guy who would actually do that.” Still, I walked out thinking I had definitely failed the interview, since it was a global firm and I couldn’t speak a word of English. But later that day, someone from their HR called me. Apparently, the CEO had been my biggest advocate. He told them, “Hire that guy.” The HR worker asked me, “What on earth did you say to the CEO?” Now, what I had told the CEO was this: “I might not speak English now, but through my CPA studies, I realized there isn’t that much difference in the capacity of human brains. It’s all about having grit. I know for sure that if I put my mind to something, there’s nothing I can’t achieve, and I will absolutely get this done.” The CEO decided, “Let’s hire one interesting guy like this”, and that’s how I got the job. ◆The Problem for Japanese Who Study English for 5,000 Hours Tateishi: Over the following years, I reached a perfect score on the TOEIC, passed the Eiken Grade 1 (the highest level of Japan’s most popular English proficiency test), and logged a cumulative total of approximately 5,000 hours of English study. Through those 5,000 hours, I had a painful realization: learning English would be far more difficult than I thought it would be when I was job hunting. I realized that this might be the single greatest challenge facing the Japanese people. I struggled with it while at that foreign-owned firm, and even after I moved to a Japanese brokerage, I was stationed in Hong Kong where I had to use both English and Chinese. If you can't use the language, you simply cannot do the job. I learned enough Chinese in Hong Kong to handle daily conversation, but if people ultimately can't understand what you're saying, you can't conduct business. Japanese people are excellent workers, but just because their English isn't great, my compatriots were being looked down on by people from headquarters or other overseas branches, and I couldn't stand it. During global training sessions and such, Japanese participants may not be able to speak English at all, but when it comes to the actual work output, they are consistently the best. Changing the reality that Japanese people are brilliant but are dismissed because they can’t communicate in English became my core motivation. I spent 5,000 hours to get there, but that’s not a realistic path for everyone. I want to use the power of technology to drastically shorten that time. This is the fundamental reason I chose the field of English education and began developing SpeakBuddy. ◆Making a “Doraemon” Who Can Speak English at Home Sugihara: Did you always have the desire to be an entrepreneur, even as a student? Tateishi: I did. I remember asking during my job interviews, “If I work at this investment bank, will it help me when I start my own company later?” But after seven years of intense, high-pressure work, I had completely forgotten that dream. However, as my desire to create a service that truly helps society grew stronger, I remembered, “Oh right, I actually wanted to start a company!” So, I quit as soon as I returned from my overseas assignment. I decided to quit first, and think of a business plan later. So, with my back against the wall, I finally went on the world tour I had always wanted to do, and I mapped out my business plan while traveling. While hopping from country to country, I was also teaching myself app development. The English learning app I built during that trip actually reached number 1 in the overall App Store rankings. Sugihara: Hitting an overall ranking of 1 is incredible! Was that app the prototype for what SpeakBuddy is today? Tateishi: Yes, I’d say that was the prototype. During my world tour, I also did a short-term study abroad program. Even when you are overseas, you find yourself wanting someone to practice English conversation with. But making friends in English out of thin air is incredibly difficult. People always say, “Just get a foreign boyfriend or girlfriend”, and I actually tried to do that while I was abroad, but it’s not as easy as it sounds, ha ha! While I was abroad, I thought, “If only I had a Doraemon* at home who could speak English with me, that would be enough.” That desire to create a Doraemon who speaks English was the starting point of our service. *Note: ‘Doraemon’ is a beloved character from a Japanese children’s cartoon who always helps the other characters with their various problems. I included a voice recognition feature in that first app, and I’m proud to say it was likely the first app in Japan to feature English voice recognition. However, back in 2014, the accuracy was still quite low. But over the next year or two, I felt the technology improving at an exponential rate. I became convinced that in the future, I would be able to create a real AI English conversation partner. In 2016, I stopped everything else I was working on and focused all my resources on AI English conversation. ◆The Problem with AI-related Branding in 2016 Sugihara: When you released the precursor to your current app back in 2016, were you already using the word ‘AI’? Tateishi: Yes. Even at the 2016 launch, we were calling it ‘AI English Conversation’. Since we had no capital at the start, we began with a crowdfunding campaign. It went surprisingly well—we raised about 4 million yen—and we were already positioning it as an AI-driven service even then. Sugihara: The speed of AI adoption and evolution lately is staggering. While language models have developed explosively in the last year or two, you were really at the forefront. Tateishi: We were the only ones in that space back then. But honestly, the immediate aftermath of the release was a struggle. People in 2016 were very vocal with their skepticism, asking, “Where exactly is the AI in this?” They’d complain, “I’m talking, but this doesn’t recognize my voice at all!” Back then, AI conversation meant little more than speaking to a character with an electronic voice. The conversational AI was still in its infancy, with a simple tree structure where we programmed specific responses to specific phrases. You couldn’t engage with it via truly free conversation like we have now. In the end, because we were getting so many reviews asking “Where’s the AI?”, we actually removed the word ‘AI’ from our branding around 2017. Having AI in the title seemed to raise expectations so high that it led to people leaving 1-star reviews, so we decided to take it out for a while. Then, around 2019, speech recognition technology started to improve dramatically. We also built our own proprietary speech recognition engine, which boosted our accuracy significantly. From that point on, the quality of our conversational AI was able to truly shine. Sugihara: When I try using features like BuddyChat now, the AI responds naturally even if I say something completely random or trivial. It clearly isn’t just simple pattern recognition anymore. Tateishi: Yes, it can handle tangents and keep the conversation going. I feel like I can finally say “This is AI” with my head held high. Back in 2015 and 2016, we were right in that peak of inflated expectations on the hype cycle, which was followed by a valley of disillusionment. During that valley, people kept telling me, “AI is a joke; it’ll never work.” But gradually, it became the real deal. Sugihara: For someone who has been working on this for a decade, do you feel like it's about time for the AI boom to finally sweep across the world? Tateishi: In a way, yes. It feels like things are moving exactly as I expected, though there’s a bit of a time lag in terms of when the world finally noticed. To be honest, even with GPT, we were looking at GPT-2 and saying, “This is going to be incredibly useful.” So by the time GPT-4 arrived, our reaction was like, “Well, it’s already been impressive since the beginning.” It’s only been in the last few years that speech recognition, Natural Language Understanding (NLU), and Personalized Learning Logic have finally synced up. Because the level of inference has jumped so significantly recently, we can now provide high-level free talk like BuddyChat. It feels like the times have finally caught up with SpeakBUDDY. ~To be continued in Part 2~ Interview conducted by D-POPS GROUP's advisor Genta Sugihara. SpeakBUDDY, Ltd. President and CEO: Tsuyoshi Tateishi Address: 3F +SHIFT Nihonbashi Sakuradori, 3-14-3 Nihonbashi, Chuo-ku, Tokyo Established: May 2013 Website: https://www.speakbuddy.com/en Next, in the second part of the interview, we discuss: ・The four pillars of SpeakBUDDY's competitive advantage ・Where SpeakBUDDY differs from Duolingo and Speak ・Rapid growth in the corporate market and feedback from business clients ・And other topics Be sure to check it out here: https://d-pops-group.co.jp/en/column/speakbuddy-part2/
  • Interview
2026.04.15
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