Niigata Idol Festival 2026 Expands Into Cosplay and Pop Culture at Bandai City

Event dates: 2026-10-24 – 2026-10-25

Where: Bandai City Park, Niigata, Japan

Genre: Idol & Cosplay Festival

Niigata Idol Festival 2026 runs October 24-25 at Bandai City Park in Niigata, pairing its idol-performance main stage with a dedicated cosplay event, "Cosplay Gataket," and a second-day "Isekai Transfer Festival."

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Two Days, Two Different Focuses

Niigata Idol Festival 2026 runs October 24 and 25 at Bandai City Park in Niigata City, with free general admission both days. The two days have distinct programming: October 24 centers on idol performances alongside a dedicated cosplay event, while October 25 shifts to "Isekai Transfer Festival 2026," featuring artist performances, maid-themed programming, and dance acts.

Cosplay Gataket

On October 24, "Cosplay Gataket in Bandai City" runs as a dedicated cosplay program, with changing rooms available from 9:30 to 16:30 and photo areas from 10:00 to 16:00 at the Bandai City Bus Center's second floor.

Not Just a Stage Show

Both days also include a creators' market for illustration, handmade goods, and original work, plus a food area featuring Niigata-area restaurants and community/business partnership booths. This is a multi-genre regional event rather than a single-stage idol concert or a pure anime convention.

More About This Event

This Year's Highlights

• October 24: idol performances plus "Cosplay Gataket in Bandai City," a dedicated cosplay program with changing rooms and photo areas.
• October 25: "Isekai Transfer Festival 2026" with artist performances, maid-themed programming, and dance acts.
• Both days include a creators' market and a food area featuring Niigata-area restaurants.

Tickets

General admission is free both days; a paid front-stage viewing area is available for the main idol stage.

Access

Bandai City Park / Bandai City Bus Center, Niigata City, Japan.

What To Know

TBM has covered Tokyo-centered cosplay and anime events extensively; Niigata Idol Festival is a reminder that Japan's idol and cosplay fan culture is active well outside Tokyo, in a regional city, over a free, two-day, multi-genre event.

Bandai City (万代シテイ), Niigata — a commercial and transit hub area in central Niigata City, and "ガタケット" (Gataket) is a long-running Niigata-area creator/fan-culture market event name, here combined with a dedicated cosplay program as "Cosplay Gataket."

Easy Japanese

「新潟アイドルフェスティバル2026」が10月24日と25日に、新潟の万代シテイで開催されます。コスプレの催しも同時にあります。

Marine's View

東京だけじゃなく、新潟でもこんなに楽しいイベントがあるんですね。