"M League Kids Mahjong Festival 2026" to be Held at Shinjuku Sumitomo Building Sankaku Hiroba!

The M League Organization (Headquarters: Minato-ku, Tokyo, Representative Director: Susumu Fujita) is pleased to announce that the "M League Kids Mahjong Festival 2026" will be held on August 24, 2026, at Shinjuku Sumitomo Building Sankaku Hiroba.

This participatory event aims to provide children from the 1st to 6th grade of elementary school with a fun learning experience and introduction to mahjong as a "mind sport." Building on the "Elementary School Mahjong Tournament" held since 2022, the event was expanded and renamed "Kids Mahjong Festival" in 2025. This year, in addition to tournament-style matches, we will offer a variety of attractions for families to enjoy, including one-game matches with M League players, mahjong classes, and festival booths.

Admission is free for elementary school students and younger. This is a great opportunity for children to experience the appeal of mahjong through interaction with M League players during their summer vacation. We encourage families to come and join us.

Furthermore, we will be conducting a crowdfunding campaign to support the "M League Kids Mahjong Festival 2026." We sincerely ask for your warm support to make this event a reality and nurture the future of mahjong. Please check the special website for details.

About the M League Kids Mahjong Festival 2026

Event Name: M League Kids Mahjong Festival 2026

Organizer: M League Organization

Cooperation: Neuron, Student Mahjong Federation, Taiyo Giken Co., Ltd., Matsuoka Co., Ltd., Mahjong Kingdom Inc.

Date: August 24, 2026 (Mon)

Time: 12:00 PM - 5:30 PM

Reception Opens:

Mahjong Tournament Participants: 11:00 AM

General Visitors & Crowdfunding Applicants: 11:30 AM

Venue: Shinjuku Sumitomo Building Sankaku Hiroba (https://www.sumitomo-sankakuhiroba.jp/access/)

Admission Fee/Participation Fee: Free

Participating M League Players: 20

EARTH JETS: Kazuma Ishii, Tomohiro Miura, Emu Aikawa

Akasaka Drivens: Taro Suzuki, Maki Asami

EX Furinkazan: Kenji Katsumata, Kotaro Uchikawa

KADOKAWA Sakura Knights: Saya Okada

KONAMI Mahjong Fight Club: Hisato Sasaki, Arisa Date

Shibuya ABEMAS: Takaharu Doi, Aiko Hinata

Sega Sammy Phoenix: Hayaka Kayumori, Dai Daigo, Genta Takeuchi

TEAM RAIDEN / Raiden: Naoki Setokuma

BEAST X: Hajime Shimoishi, Rio Tojo

U-NEXT Pirates: Yu Suzuki, Koushin Asakura

M League Official Commentators: 2

Misa Kobayashi

Tatsuya Hiyoshi

Mahjong Professionals: 2

Chie Sugawara

Kanako Maruyama

Event Content:

1 Elementary School Mahjong Tournament

2 Mahjong Class

3 Mahjong Tile Keychain Making Workshop

4 Event Booths

- Festival Games

- Match Corner

└ One-Game Match Booth

└ Online Mahjong Booth ("Mahjong Fight Club Sp", "Sega NET Mahjong MJ")

- Mock Mahjong Pro Test

- Mahjong Stamp Rally

- Photo Spot

- On-site Merchandise Sales

*Participation in the Elementary School Mahjong Tournament is limited to those selected through advance application.

*The Mahjong Class and Mahjong Tile Keychain Making Workshop will have both advance application slots and same-day registration slots (lottery/first-come, first-served). Please refer to this page for details.

*Event booths are open to all visitors after entry.

*Event details are subject to change without prior notice.

About the Elementary School Mahjong Tournament

- Opening Ceremony: 12:00 PM - 12:15 PM

- Mahjong Lesson by M League Players: 12:15 PM - 12:55 PM

- Mahjong Tournament (East Wind Game, 3 rounds): 40 minutes per round x 3 rounds

└ Round 1: 1:00 PM - 1:40 PM

└ Round 2: 1:50 PM - 2:30 PM

└ Round 3: 2:40 PM - 3:20 PM

- One-Game Match with M League Players: 3:30 PM - 4:00 PM

- Q&A Session: 4:10 PM - 4:40 PM

- Awards Ceremony: 4:40 PM - 4:55 PM

- Closing Ceremony: 4:55 PM - 5:15 PM

- Commemorative Photo: 5:15 PM - 5:30 PM

●Capacity: 100 participants

●Eligibility: Children from 1st to 6th grade of elementary school who meet the following criteria:

- Have experience playing mahjong with actual mahjong tiles.

- Can play a game from start to finish based on their own judgment without relying on others.

- Know the basic winning hands.

*Confidence in score calculation is not required.

*Parental consent and accompaniment on the day of the tournament are required. Due to venue capacity, the number of accompanying adults is limited to two per child (preschool children may accompany).

*Parents/guardians are required to remain within the venue during the event.

*Tournament results will be sent to the registered email address after the event.

About the Mahjong Class

We will hold a mahjong class with EX Furinkazan's Kenji Katsumata as the instructor, combining lectures and practical play.

- Capacity: 16 participants x 2 sessions

- Duration: 1 hour per session

- Schedule:

1 [1:30 PM Session]: Advance Lottery (apply via application form)

2 [3:00 PM Session]: Same-day Lottery (lottery tickets distributed at the venue)

Application methods vary by session. Please check the following information.

1 For those wishing to attend the [1:30 PM Session], please fill out the required information on the application form at the bottom of this page.

2 For the [3:00 PM Session], a lottery will be held on the day of the event, and winners will be able to participate. Lottery tickets will be distributed in front of the Mahjong Class booth from 11:30 AM to 1:00 PM. Winners will be announced between 2:30 PM and 2:40 PM.

*Lottery tickets are only for elementary school children.

*Anyone can observe the Mahjong Class from the standing area. However, participation in the lecture and practice is limited to those who have won the advance application or same-day lottery.

About the Mahjong Tile Keychain Making Workshop

We will hold a workshop where participants can create original keychains by pouring colorful resin into mahjong tiles featuring the M League logo.

- Capacity: 20 participants x 5 sessions

- Duration: 30 minutes per session

- Schedule:

1 [12:30 PM Session] 2 [1:15 PM Session]: Advance Lottery (application form)

3 [2:00 PM Session] 4 [2:45 PM Session] 5 [3:30 PM Session]: Same-day First-come, First-served (numbered tickets distributed)

Application methods vary by session. Please check the following information.

1 & 2: For those wishing to attend sessions 1 and 2, please fill out the required information on the application form at the bottom of this page.

3, 4, & 5: Numbered tickets will be distributed on a first-come, first-served basis at the workshop event booth starting at 11:30 AM. Distribution will end once capacity is reached for each session.

*Numbered tickets are only for elementary school children.

Application Form for Mahjong Tournament, Mahjong Class, and Workshop

●Participation Fee: Free

●Application URL: https://forms.gle/CHDefRhCfE9whEAN9

●Application Start Date: July 13, 2026 (Mon) 12:00 PM (Noon)

●Application Deadline: August 3, 2026 (Mon) 6:00 PM

*If the number of applicants exceeds capacity, a lottery will be held. Results will be communicated via email by August 10, 2026 (Mon), regardless of winning or losing.

*One application allows you to apply for all three content areas (Mahjong Tournament, Mahjong Class, Workshop), with up to 3 choices. If you win a spot in any content area, you will not be eligible for duplicate wins in other content areas.

About Crowdfunding

A crowdfunding campaign will be conducted for the "M League Kids Mahjong Festival." Donors will receive rewards such as "M.LEAGUE OFFICIAL TRADING CARDS" digital trading cards (limited 5-star design, 37 types) and the right to play a one-game match with three M League players. Please check the crowdfunding page for details.

We sincerely appreciate your warm support.

"M League Kids Mahjong Festival" Crowdfunding

Application Period: July 15, 2026 (Wed) 12:00 PM (Noon) - August 23, 2026 (Sun) 11:59 PM

URL: https://camp-fire.jp/projects/957253/view?utm_campaign=cp_po_share_c_msg_mypage_projects_show

*Crowdfunding applicants, regardless of their chosen plan, will be able to enter the event and participate in event booths. Please present your crowdfunding support screen at reception for entry.

Notes

- Entry to this event is limited to elementary school students, preschoolers, and their accompanying persons. Junior high school students and older who have not applied for crowdfunding will be denied entry.

- Elementary school students and preschoolers must be accompanied by a parent or guardian to enter. Entry will be denied without accompaniment.

- Junior high school students and older can only enter if they are crowdfunding supporters. Entry requires presenting the crowdfunding support screen at reception. Entry may be denied if the screen cannot be presented.

- Depending on crowd density, entry may be restricted for safety reasons.

- Participating M League players may be unable to attend due to illness or transportation issues on the day of the event.

*Photos, videos, and moving images (including individual likenesses of attendees) taken at the venue may be used for the following purposes. Thank you for your understanding.

- Display on various monitors installed at the venue.

- Use on M League and club official media.

- Use on ABEMA "Mahjong Channel."

- Use on news programs and related media.

M League Organization Overview

[Name] M League Organization

[Officers]

Supreme Advisor: Saburo Kawabuchi, Representative Director and Chairman, Japan Top League Alliance; Advisor, Japan Football Association

Representative Director: Susumu Fujita, Representative Director and Chairman, CyberAgent, Inc.

Director: Yoshiyuki Furuya, Director and Vice President, Earth Pharmaceutical Co., Ltd.

Director: Naohisa Yamashita, Director, Representative Executive Officer, CHRO, CLFO, CMLO, CPO, KADOKAWA Corporation

Director: Yoshitaka Nishimura, Representative Director and President, Konami Arcade Games Co., Ltd.

Director: Takaharu Sato, Representative Director and President, Japanet Broadcasting Corporation

Director: Yukio Sugino, Representative Director and President, SEGA Feve Co., Ltd.; Representative Director and Vice President, Co-COO, SEGA Corporation

Director: Gengo Kaminami, Director and Vice President, TV Asahi Corporation

Director: Mitsutaka Nakamura, Director and Executive Officer, Dentsu Inc.

Director: Satoru Yamada, Director and Senior Managing Executive Officer, Hakuhodo Inc.

Director: Tenshin Tsutsumi, Representative Director and President, U-NEXT Corporation

Auditor: Tomoharu Inoue, Representative Director, Inoue Business Consultants Co., Ltd.

[Location] Minato-ku, Tokyo

[Start of Activities] July 2018

Official Website: https://m-league.jp

URLs

"M League" Official Website: https://m-league.jp

"M League" Official X: https://x.com/m_league_

"M League" Official YouTube: https://www.youtube.com/c/m-league

"M League" LINE: http://nav.cx/2cdpHvu