Youth-led Civic Innovation from Adachi, Tokyo

Step out of the audience.
Step into the story.

Give every teenager the chance to discover who they have yet to become

TEIGEN JP is a student-led organization building new ways for young people to take part in democracy, based in Adachi City — one of Tokyo's 23 special wards.

0+ peopleCumulative participants across all programs — Mock Ward Mayoral Election, Osouji-tai, school outreach and more
0 yearsAverage age of our 38 members. Teenagers run this organization.
0+Media appearances — national newspapers, public bulletins, online outlets and more
TEIGEN to the Prime MinisterDelivered our TEIGEN to then Prime Minister Fumio Kishida at the Prime Minister's Office (2023)
Working with government and assembliesCo-created with Adachi City Hall, the ward assembly, the board of education and the election administration commission
National championsGrand Prize at the National High School Policy Koshien, the NHK President's Award, and seven other honors — nine in total

Figures as of July 2026. Definitions and sources are listed under Results and Recognition.

Founding Question

Who gets to meet the person
they have not yet become?

It is always the same people who speak up. The same hands go up; the same ones get chosen to represent everyone. Is that really all right? TEIGEN JP began in that unease. What we believe, in five chapters.

Voices

TEIGEN JP, in Our Own Words

From the audience to the people who build it. Saki Akiyama | Participant, Mock Ward Mayoral Election 2025 → Operations Team 2026 → Manager, Civic Education Division A year after taking part as a participant, she was running the program. Overwhelmed and then carried forward by the drive of the people around her, she came out of it with the confidence she has now. Read Interview 01: The Cycle Portrait of Saki Akiyama Nothing changes while you wait for someone else to act. Masatsugu Goto | Manager, Clean Education Division Gum stuck under the desks and bread jammed in the toilets — what he saw at school in New Zealand. Why is Japan comparatively clean? He turned that question into a program that had never existed before. Read Interview 02: Zero to One Portrait of Masatsugu Goto A high school junior,
with the title of project manager.
Shuta Kanehara | Project Manager, Adachi Mock Ward Mayoral Election Operations Team, third cohort A high school junior directing university students older than he is. In an organization that runs on roles rather than age or seniority, he puts it plainly: a team that falls apart without me is a team I have failed to build. Read Interview 03: On the Ground
Portrait of Shuta Kanehara
Founders don't graduate. Kanae Yokohama | Legacy Fellows, first cohort and founding member In 2023 there were four people and a question. As the group grew, enthusiasm alone stopped holding it together — and out of that pain came structure. Why she keeps walking alongside the organization as a Legacy Fellow after graduating. Read Interview 04: Succession Portrait of Kanae Yokohama

Comments from the government officials, educators and ward assembly members we work with will be published as each is confirmed by the speaker.

Expansion & Base Map

From Adachi to Tokyo.
And then to every town.

We work primarily online, with three physical bases in Tokyo for general meetings, working sessions and events. Each new region gets the model redesigned for its own context — one more circuit for young people to take part, at a time.

TOKYO BAY BASE / ONLINE Online (Zoom and Discord) The daily backbone connecting members across Tokyo and the three surrounding prefectures. SINCE 2023 / HOME Adachi City CONCEPT Setagaya City Redesigning the Mock Ward Mayoral Election NEXT GOAL: TOKYO Tokyo, city-wide Mock Gubernatorial Election (in development) — inter-school format, inside the assembly Toronto Youth Cabinet International exchange of practice (since 2024) Adachi City Hall Umejima, Adachi City — our main base for the Mock Ward Mayoral Election and government partnerships Tokyo Innovation Base Yurakucho, Chiyoda City — large events and external partnerships Ginza Community Hall Ginza, Chuo City — general meetings and regular working sessions
Tokyo
Ward where programs run (since 2023) In development Bases (three in Tokyo) Online backbone Ward boundaries based on National Land Numerical Information (Ministry of Land, Infrastructure, Transport and Tourism)
Outreach delivered — 5 prefectures To reach by 2030 — 42 prefectures TEIGEN VISION 2030 | As of July 2026

Soka Horii|Soka HoriiFounder and Representative, TEIGEN JP | Faculty of Policy Management, Keio University

FROM A QUESTION TO A SYSTEM

One person's question,
turned into someone else's opportunity.

Adachi City, 2023.

In a climate where nothing was expected to change, one 15-year-old could not shake the feeling that something was wrong.

Why should the chance to think about society and act on it depend on where you happen to grow up?

Three friends from the same neighborhood answered that question with him. One person's unease became four people's resolve, and TEIGEN JP began.

What we set out to build was not a place where politics is explained to you. It is a place where teenagers raise their own questions, draft policy, face opinions they disagree with, and finally choose for themselves — where the decisions a society makes become your own problem to solve.

Read what happened next

The first Mock Ward Mayoral Election did not end as a one-off event. High school students who had taken part came back to build the next one, and partnerships with local government, schools and companies followed. What began in Adachi is now spreading to Setagaya and to Tokyo as a whole.

That way of learning — ask, think, work with others, act — has since moved beyond civic education into new practices, starting with learning through community cleanup.

An organization that began with four people is now38.
Through our work so far we have reached1,000 people with opportunities to learn and to argue things out.

But the number we most want to grow is not participants, or programs.

It is this: the person who received an opportunity creates the next one for someone else.
That cycle is the point.

TEIGEN JP is not built to preserve its founder's intentions. It is built so that each generation can take the question it inherits, ask it again in its own words, decide for itself, and rebuild the practice around it.

One person's question is becoming something other than an answer to hand down. It is becoming the machinery that lets the next person start asking.

The next chapter belongs to the next Questioner.

Four turning points

01 / QUESTION2023 | From one question to four people acting on it
02 / WORLD2024 | Looking outward, and bringing the lessons back into the design
03 / RELAY2025 | Participants become the people who run it
04 / SYSTEM2026 | Turning drive into structure

Read all four turning points, with the records →

Read the rest of this story →

Scenes

The room, not just the record.

A question appears, becomes an argument, becomes policy, becomes a speech and then a vote. One day, in six scenes. Choose a photograph to open it.

Every photograph from the day, in no particular order

ALL SCENES — the full record

Partners & Collaborations

The institutions, companies and
organizations who built this with us.

Adachi Ward AssemblyCITY ASSEMBLYAdachi Board of EducationBOARD OF EDUCATIONAdachi Election Administration CommissionELECTION COMMISSIONJunior Chamber International JapanCONFERENCE Adachi Ward AssemblyCITY ASSEMBLYAdachi Board of EducationBOARD OF EDUCATIONAdachi Election Administration CommissionELECTION COMMISSIONJunior Chamber International JapanCONFERENCE Adachi Ward AssemblyCITY ASSEMBLYAdachi Board of EducationBOARD OF EDUCATIONAdachi Election Administration CommissionELECTION COMMISSIONJunior Chamber International JapanCONFERENCE Adachi Ward AssemblyCITY ASSEMBLYAdachi Board of EducationBOARD OF EDUCATIONAdachi Election Administration CommissionELECTION COMMISSIONJunior Chamber International JapanCONFERENCE

Co-hosts, supporters, partners, memberships and speaking invitations. Partial list, in no particular order.

Track Record

Selected Engagements

A selection from forty speaking engagements as of July 2026. From the Prime Minister's Office to a middle school classroom — change the room and you change what needs saying.

Flagship Presenting policy to Fumio Kishida, then Prime Minister December 2023, the Prime Minister's Office. As high school students, delivering a TEIGEN on youth political participation at the center of Japan's decision-making.
Government & Ministry

Government

  • 2024Youth Leader Forum, Association for Promoting Fair Elections and the Ministry of Internal Affairs and Communications (November, representing Tokyo)
  • 2026Citizenship Education Meeting, Japan Citizenship Education Forum (March)
Councils & Schools

Assemblies and schools

  • 2026Study session for members of the Yashio City Assembly, Saitama (June)
  • 2026Aichi Prefectural Tokai Shofu High School (July)
  • 2026Adachi Municipal Fourth Middle School (March)
Conferences

Business bodies and conferences

  • 2026Summer Conference 2026, Junior Chamber International Japan (July) — on stage with Kazuhiro Fujihara
  • 2025Summer Conference 2025 (July) — in conversation with Ryosuke Takashima, Mayor of Ashiya
  • 2025Adachi 100-Person Meeting — its youngest ever guest speaker
Global & Dialogues

International

  • 2024Meeting with Stephen Mensah, Executive Director of the Toronto Youth Cabinet (August, Toronto, Canada)
  • 2025Student panellist at the special lecture by Mercy Tembon, then Vice President of the World Bank (June)
  • 2026"Hints for How to Live": in conversation with the Mayor of Minoh and the Mayor of Miyake (April, Ikeda, Osaka)

For You

Whatever brought you here.

Teachers, teenagers wanting to start something, people looking for a speaker. Tell us why you came and we will point you at the answer.

For government and assemblies, see For Local Government; for press and broadcast enquiries, see Press enquiries. Our research and TEIGEN articles are collected under Research and TEIGEN.

Organization

Organization Profile

NameTEIGEN JP, a student organization
Founded1 June 2023
DirectorSoka Horii (first year, Faculty of Policy Management, Keio University)
Based inAdachi, Tokyo — and outward from there, across Tokyo and the country
Members38 as of June 2026, from first-year high school to first-year university
ProgramsCivic education: Mock Ward Mayoral ElectionSchool Outreach Program
Community cleanup: Osouji-tai: Protect Your Neighborhood
Main partnersAdachi Ward Office, Adachi Ward Assembly, Adachi Board of Education, Adachi Election Administration Commission, Duskin Co., Ltd. and others
Contact Uscontact@teigenjp.org

Officers, founding purpose and program details are on About Us.

Changing society is not
reserved for special people.

The next TEIGEN starts with the question already in you.