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The Idolm@ster 20th Anniversary

アイドルマスター20周年

A special 20th anniversary celebration features live performances and a retrospective of the Idolmaster series, with free livestream access available.

Updated 2026/07/12
This event has endedIt took place 26 Jul 2025. Check the official website for future editions.
The Idolm@ster 20th Anniversary, Matsudo
© The Idolm@ster / Bandai Namco Entertainment Inc.
Dates
26 Jul 2025
Opening hours
26 Jul 202517:00
Admission
Adult¥700
Links
Official websiteJapanese
Venue
Hall of the Forest 21646-4, Sendabori, Matsudo-Shi, Chiba 〒 270-2252Shin-Yahashira Station (Keisei Matsudo Line, Musashino Line)Walk 14 minutes2 minutes by bus to 森のホール21公園中央口

The "Idolmaster" 20th anniversary event, titled "アイ MUST GO ON!! これからもアイマスですよ！," is set to be a grand celebration taking place on July 26, 2025. It will be held at Mori no Hall 21 (Matsudo City Cultural Hall) with doors opening at 17:00 and the event starting at 18:00. This special event will feature a mix of live performances and a segment reflecting on the 20-year journey of the Idolmaster series.

Additionally, the event will also be live-streamed for free on platforms such as アイマスch (the official Youtube channel of "The Idolm@ster").

Ticket pre-sales start from December 27, 2024, to January 26, 2025, on the Asobi ticket platform.

At Hey Japan!, we strive to keep the events listed on our website as current as possible. However, event organizers may cancel events, alter schedules, or modify admission requirements without prior notice. Check official websites before attending any event.

Part ofMusic Festivals
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