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Message from the Founder

Soka Horii, founder and executive director, on where this began and what it promises.

Message from the Founder

Soka Horii (堀井爽夏), Executive Director of TEIGEN JP

At nineteen, leading an organization of 38 students and building, with government, assemblies, schools and companies, the chances for teenagers to move things.

Teenagers have been the audience.
Put them at the center.

Thank you for coming to this page. I am Soka Horii, Executive Director of TEIGEN JP.

I grew up in Adachi City, Tokyo, the Tokyo ward with the lowest youth turnout and the lowest average income of the twenty-three. Neighbors looked out for me and I spent my public elementary and junior high school years running around on the banks of the Arakawa — and still, in a town where something like resignation hung in the air, I stayed in the audience, like everyone else my age.

That changed in the spring of 2023, when I started at a private high school in Bunkyo. I was overwhelmed by people my own age who had serious ambitions and who went at extracurriculars and social problems on their own initiative.

Looking at them, I saw my friends from home, and felt something I could not name. Turning it over, I arrived at an answer.

What separated them from my friends was not ability. It was the chance to meet society and find out what they were capable of.

Anyone should be able to stand at the center of society, whatever their circumstances — and for that, someone had to go first.

That decision is where TEIGEN JP starts.

ActionSix months from founding

All of that happened within six months of founding. Since then the Mock Ward Mayoral Election has run again and again in Adachi, and Osouji-tai: Protect Your Neighborhood has begun in elementary schools. Not just saying a TEIGEN but building it — that is what we have been doing, at the same table as the ward office and the assembly.

OrganizationFrom one person's question to something that outlasts a decade

This is no longer mine alone. Thirty-eight high school and university students from across Tokyo and the three neighboring prefectures are here now, drawn by the mission that every teenager should get to meet the person they have not yet become. A student who came to the Mock Ward Mayoral Election as a participant is at the center of running it the following year. The person who received the opportunity comes round to making the next one.

We have also changed the shape of the organization so that it does not depend on one person's energy. The general meeting is the highest decision-making body; the board and each division decide for themselves. The alumni association, Shofukai, stays alongside the current members, and the five-year vision committee is drawing the next course.

Something that began with one person's question, made into something that does not end with one person. It is an attempt to get past the short life expectancy of a student organization — to hand it on, and to keep producing chances for teenagers to experience democracy.

PromiseWhat I promise as executive director

TEIGEN JP has set out TEIGEN VISION 2030, taking our work to all 47 prefectures by 2030. The citizenship education and cleanup education we grew in Adachi have to be sharpened into a model that any classroom anywhere can run, without depending on one place or one person.

Beyond that lies the aim I will give everything to: that teenagers anywhere in this country, whatever their circumstances and wherever they live, find out what they are capable of and have a door through which to take a step into society.

None of this would exist without the people in government, assemblies, schools, companies and the community who took a fifteen-year-old's question seriously, and without the families who let their children come and do this. Thank you, sincerely, for the encouragement and the support.

Toward the future that lies past the question, we will go on being Questioners, and as one team we will push harder. Until every teenager gets the chance to meet the person they have not yet become.

Always Be a Questioner.

1 June 2026

Executive Director, TEIGEN JP

Signature of Soka Horii
Portrait of Soka Horii (堀井爽夏), Executive Director of TEIGEN JP

Profile

Soka Horii

Founder and Executive Director, TEIGEN JP

Born 2007, from Adachi, Tokyo. First year, Faculty of Policy Management, Keio University. Founded TEIGEN JP at 15 and co-created the Mock Ward Mayoral Election — in which teenagers draft policy and go through the candidacy process — in Adachi, and is now extending it to Setagaya and wider Tokyo. He has made a policy proposal to the Prime Minister of Japan and appeared in dialogues with a Vice President of the World Bank and the Mayor of Ashiya. Honours include first place nationally at the National High School Policy Championship (supported by the Cabinet Office and MEXT) and, at the High School Students' Speech Contest (hosted by the United Nations Association of Japan), the Special Prize and the NHK President's Award. He specialises in youth political participation and closing the opportunity gap.

19 years oldBorn in Adachi, Tokyo
2023 TEIGEN JP founded
40+Speaking engagements

Speaking Topics

  • How it was attempted — a high school student getting society to move
  • Youth political participation and hands-on citizenship education
  • The youth council model — the leading edge of youth advocacy
  • Building a student organization
  • Branding that produces admiration and belonging

Speaking themes and bookings →

Teigen Tairiku (full version)
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The question is not the executive director's alone.
This is what TEIGEN JP is.