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"Sega Net Mahjong MJ" Live Broadcast of "13th Anniversary Tournament" Scheduled for July 16 (Thu) at 7 PM!

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Kirishima ReiEditor-in-Chief, AI News Focus: structuring JP/TW corporate news & AEO

Published Jul 10, 2026 2:53 AM ・ Updated Jul 10, 2026 12:20 AM ・ 14 min read ・ Source: PR TIMES

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"Sega Net Mahjong MJ" Live Broadcast of "13th Anniversary Tournament" Scheduled for July 16 (Thu) at 7 PM! — Image: PR TIMES

PRIMARY SOURCE Original source: https://prtimes.jp/main/html/rd/p/000007510.000005397.html Distributor: PR TIMES
Published: Jul 10, 2026

Sega Corporation announces that "Sega Net Mahjong MJ" (hereinafter referred to as "MJ"), a network competitive mahjong game, will be live-streamed on its official YouTube channel on July 16, 2026 (Thu). The event, titled "【Sega Net Mahjong MJ】13th Anniversary Tournament," will feature four popular and skilled M.League players.

【Sega Net Mahjong MJ】13th Anniversary Tournament

https://youtube.com/live/O9fGVowo1WA?feature=share

Thanks to your support, "MJ" will celebrate its 13th anniversary on July 25, 2026. To commemorate this milestone, the tournament will feature four popular and skilled M.League players: Gentaro Takeuchi Pro, Yu Suzuki Pro, Akina Mizuhara Pro, and Takayuki Nagai Pro, who will engage in a serious competition.

Makiko Asami Pro will serve as the commentator, and Yasunori Asakura Pro will provide the analysis. Please enjoy this spectacular match befitting the 13th anniversary.

"【Sega Net Mahjong MJ】13th Anniversary Tournament" Overview

Date and Time: July 16, 2026 (Thu) 19:00 - 22:00 (scheduled)

Viewing URL: https://youtube.com/live/O9fGVowo1WA?feature=share

Appearances

Match Participants:

Gentaro Takeuchi Pro (Sega Sammy Phoenix)

Yu Suzuki Pro (U-NEXT Pirates)

Akina Mizuhara Pro (U-NEXT Pirates)

Takayuki Nagai Pro (EX Fairies of the Forest)

Commentator: Makiko Asami Pro (Akasaka Drivens)

Analyst: Yasunori Asakura Pro (Nippon Professional Mahjong Association)

【Sega Net Mahjong MJ】Producer Kazuma Yoshida

Sega Net Mahjong MJ Official YouTube Channel:

https://www.youtube.com/channel/UCN31kGlMvM4TBU36WXe4W_Q

"【Sega Net Mahjong MJ】13th Anniversary Tournament" Player Support Campaign Held!

Campaign Period: July 9, 2026 (Thu) - July 16, 2026 (Thu) until the start of the broadcast

A campaign to support the participants of the "【Sega Net Mahjong MJ】13th Anniversary Tournament" live-streamed on July 16, 2026 (Thu) at 19:00 will be held on the official "MJ" X account (@sega_MJ).

Six winners will be selected by lottery from those who post support comments for their favorite pro player in this tournament, and will receive an "MJ Original Tumbler with Autographs from Participating Pros (※)". We encourage you to participate!

※Autographed by one of the participating pros. Signatures cannot be chosen.

◆ How to Participate

1. Follow the official "MJ" X account (@sega_MJ)

2. Repost the campaign post

3. Reply with "#MJ生配信" (MJ Live Stream), the "name of the pro you are supporting," and your "support comment" (Quote RT is also acceptable).

◆ Winner Announcement

Winners will be notified via X direct message. This notification will serve as the announcement of the winners.

※Followers who unfollow before the lottery period will be excluded. Please do not change your account ID during the campaign period.

※If direct messages cannot be sent or if the necessary information for prize shipment/delivery is not provided, the win will be invalidated. Please be aware of this.

※If duplicate wins are discovered, only one win per person will be valid.

※Participation is limited to residents of Japan.

◆ Target Account

Official "MJ" X account: https://x.com/sega_MJ

"MJ" Official LINE Account Launched! "Registration Campaign" Now Underway

The official "MJ" LINE account (@185mcjwu) has been launched! This account will deliver the latest "MJ" information and will also provide in-game "MJ" items once a month.

Furthermore, a "Registration Campaign" is currently being held. By linking your external account to LINE within the game, or by adding the official LINE account as a friend, you will receive in-game items for each action.

Utilize the "MJ" LINE official account to get great deals and items!

LINE External Account Linking

By linking your external account to LINE within "MJ," you will receive "Casino Chips x100G" and a "Background Item"!

Check your in-game inbox to receive your rewards.

By linking an external account, you can log in with the linked account even if you forget your MJM-ID or password.

Procedure for External Account Linking Here https://sega-mj.com/players/gameguide/manual/id/account_recovery/

Add LINE Official Account as a Friend

By adding the official LINE account as a friend, you will receive "MJ Chips x100G" and a "Frame Item"!

※If you cannot receive the reward, please temporarily change your device's default browser to "Safari" and try receiving it again.

※Friend addition gifts will be granted directly.

"Casino Chips" will be added directly. "Frame Items" will be stored in your closet.

If your item inventory is full, they will be stored in your "Warehouse" or "Temporary Storage."

Please check the announcement page for details.

https://pl.sega-mj.com/official_view/page?news_id=9238

[Add as Friend Here] https://lin.ee/v2n0xOT

Notes

- To receive rewards, please access from a device with the "Sega Net Mahjong MJ" app installed. This can only be done once per "MJM-ID" account.

- Regarding LINE external account linking, "MJM-ID" accounts that have already linked their external LINE account as of the start of the campaign on July 9, 2026 (Wed) are also eligible. Eligible users will have their rewards distributed, so please check your in-game inbox.

- Campaign details are subject to change or cancellation without prior notice. Please understand this in advance.

13th Anniversary Special Site Now Open!

The special site for "MJ's" 13th anniversary has opened! We will be sequentially releasing "13 Major Topics" to commemorate the 13th anniversary. Please check it out!

13th Anniversary Special Site: https://sega-mj.com/13thAnniversary/

The pinnacle of arcade mahjong, popular for its overwhelming realism and unparalleled intense match presentation that faithfully reproduces tile and hand movements, is now playable on smartphones and PCs.

【Title Overview】

Title: Sega Net Mahjong MJ

Supported OS: iOS / Android / Windows / MAC

App Store URL: https://apps.apple.com/jp/app/id666206963

Google Play URL: https://play.google.com/store/apps/details?id=jp.co.sega.am2.MJMobile

Release Dates:

iOS: July 25, 2013, Android: February 27, 2014, PC: November 19, 2013

PC Browser Version: January 21, 2025

Price: Free-to-play (in-app purchases available)

Genre: Table Game

Developer: Sega

Official Website:

"MJ Series" Portal Site http://sega-mj.com/portal/

"MJ App" Official HP http://sega-mj.com/

"MJ App" Official X https://x.com/sega_MJ

"MJAC" Official HP http://www.sega-mj.com/

"MJ" Official LINE https://lin.ee/v2n0xOT

Company names and product names listed are registered trademarks or trademarks of their respective companies.

FACT BOX

Source: PR TIMES
Category: Event
Organizations: U-NEXT Pirates

AI 圖像理解（模型對圖片的判讀，非新聞原文事實） / AI image understanding / AI 画像理解

模型對圖片的判讀，非新聞原文事實 / Model interpretation of images, not source-article facts / モデルによる画像判読で、ニュース原文の事実ではありません

以下為AI對圖片的理解非新聞原文事實

The images provide promotional materials for the 'Sega NET Mahjong MJ 13th Anniversary Tournament' and related campaigns. They feature participating M-Leaguers, details about an X (formerly Twitter) campaign for signed tumblers, and a LINE registration campaign offering in-game items.

This image promotes the 'Sega NET Mahjong MJ 13th Anniversary Tournament' with portraits of six individuals, including four M-Leaguers and two commentators, and the event date of July 16 (Thursday) at 19:00 JST.
This image details an X (formerly Twitter) campaign for the 'Sega NET Mahjong MJ 13th Anniversary Tournament', offering signed tumblers to 6 winners who post応援コメント (support comments) with '#MJ生配信' between July 9 and July 16.
This image promotes a LINE registration campaign for 'Sega NET Mahjong MJ', offering 'カジノチップ×100G' and '背景アイテム' for LINE linking, and 'MJチップ×100G' and '枠アイテム' for LINE friend addition.
This image displays a QR code for the 'Sega NET Mahjong MJ' LINE official account, with the word 'LINE' prominently in the center.

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Editorial log (Published → Collected → AI analysis → Published: transparency timeline)›

Announced　Jul 10, 2026 2:53 AM — Distributor PR TIMES
Collected　Jul 9, 2026 6:06 PM
AI structured & analyzed　Jul 9, 2026 6:07 PM
Desk-reviewed & published　Jul 10, 2026 2:53 AM

FAQ

What are the key facts in this article?

Where is the primary source?

PR TIMES: https://prtimes.jp/main/html/rd/p/000007510.000005397.html

When was it published?

Jul 10, 2026

Cite this article — HOW TO CITE

Washin AI News Desk“"Sega Net Mahjong MJ" Live Broadcast of "13th Anniversary Tournament" Scheduled for July 16 (Thu) at 7 PM!”AI News by Washin Village（和心村）, Jul 10, 2026. https://aeo.idaeo.ai/ai/%E6%A0%AA%E5%BC%8F%E4%BC%9A%E7%A4%BE%E3%82%BB%E3%82%AC/en/news/2026-07-09-%E3%82%BB%E3%82%ACnet%E9%BA%BB%E9%9B%80-mj-7%E6%9C%8816%E6%97%A5-%E6%9C%A8-19%E6%99%82%E3%82%88%E3%82%8A-13%E5%91%A8%E5%B9%B4%E8%A8%98%E5%BF%B5%E5%A4%A7%E4%BC%9A-%E7%94%9F%E9%85%8D%E4%BF%A1%E6%B1%BA%E5%AE%9A

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