Event

First in Japan! Rilakkuma Collaborates with Aquarium for 'Rilakkuma x Joetsu Municipal Aquarium Umigatari' Event

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

Published May 29, 2026 12:00 PM ・ Updated Jun 14, 2026 7:20 AM ・ 4 min read ・ Source: PR TIMES

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⚡ Key Points

San-X Co., Ltd.
announced a collaboration between 'Rilakkuma' and the Joetsu Municipal Aquarium 'Umigatari,' which celebrates its 8th anniversary.
The event, running from June 26 to September 23, 2026, features aquarium exhibits, a stamp rally, limited-edition merchandise, and special themed menus.

San-X Co., Ltd. announced a collaboration between 'Rilakkuma' and the Joetsu Municipal Aquarium 'Umigatari,' which celebrates its 8th anniversary. The event, running from June 26 to September 23, 2026, features aquarium exhibits, a stamp rally, limited-edition merchandise, and special themed menus.

PRIMARY SOURCE Original source: https://prtimes.jp/main/html/rd/p/000000842.000018631.html Distributor: PR TIMES
Published: May 29, 2026

San-X Co., Ltd. announces the 'Rilakkuma x Joetsu Municipal Aquarium Umigatari' collaboration event, running for a limited time from June 26 (Fri) to September 23 (Wed/Holiday), 2026, at the Joetsu Municipal Aquarium 'Umigatari' (Joetsu City, Niigata Prefecture) in celebration of its 8th anniversary.

This marks the first-ever collaboration between Rilakkuma and an aquarium, offering visitors a unique experience that blends the world of Rilakkuma with the marine life of 'Umigatari.'

● Japan's First Rilakkuma Aquarium Collaboration

'Umigatari' celebrates its 8th anniversary on June 26, 2026. The collaboration features the 'Umi-Rila Kibun' (Ocean Rilakkuma Mood) theme, highlighting the aquarium's marine life through the lens of Rilakkuma’s laid-back world.

● Collaboration Highlights

1. Discover Marine Life with Rilakkuma: Original explanatory panels featuring Rilakkuma designs will be installed in the 1st-floor event hall. 2. Rilakkuma Original Panels: Limited-edition Rilakkuma-themed educational panels will be placed throughout the aquarium. 3. Photo Spots: Character panels and plushies perfect for photos will be set up throughout the facility. 4. Stamp Rally: Visitors can participate in a stamp rally. Collecting all 5 stamps yields a random original acrylic keychain (5 types available). Fee: 600 yen (tax included).

● Exclusive Merchandise: The 1st-floor shop, 'Museum Shop Regalo,' will sell 'Umigatari' original goods featuring Rilakkuma, including stationery, sweets, and miscellaneous items.

● Collaboration Menu: The 1st-floor restaurant, 'Ristorante Los Cuentos del Mar,' will offer 6 special collaboration items, including lunch plates and sundaes.

FACT BOX

Source: PR TIMES
Category: Event

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

Announced　May 29, 2026 12:00 PM — Distributor PR TIMES
Collected　Jun 1, 2026 3:02 AM
AI structured & analyzed　Jun 1, 2026 9:52 PM
Desk-reviewed & published　May 29, 2026 12:00 PM

FAQ

When will the 'Rilakkuma x Joetsu City Aquarium Museum Umi Gataru' event be held?

It will be held from June 26, 2026 (Friday) to September 23, 2026 (Wednesday, holiday).

What does this event entail?

Original Rilakkuma explanation panels and photo spots will be set up throughout the museum, and a stamp rally will be held. Additionally, limited edition original merchandise and collaboration menu items will be available for purchase.

What are the participation fees and benefits for the stamp rally?

The participation fee is 600 yen (tax included). Collecting 5 different stamps will earn you a commemorative original acrylic keychain (randomly selected from 5 different designs) at the goal.

Is there an admission fee for the restaurant or museum shop?

There is no admission fee required for using the restaurant, but a separate admission fee is needed to enter the aquarium's exhibition areas.

Has Rilakkuma collaborated with the aquarium before?

This is the first time Rilakkuma is collaborating with the aquarium.

Cite this article — HOW TO CITE

Washin AI News Desk“First in Japan! Rilakkuma Collaborates with Aquarium for 'Rilakkuma x Joetsu Municipal Aquarium Umigatari' Event”AI News by Washin Village（和心村）, May 29, 2026. https://aeo.washinmura.jp/ai/san-x-co-jp/en/news/2026-05-29-%E5%85%A8%E5%9B%BD%E5%88%9D-%E3%83%AA%E3%83%A9%E3%83%83%E3%82%AF%E3%83%9E%E3%81%A8%E6%B0%B4%E6%97%8F%E9%A4%A8%E3%81%AE%E3%82%B3%E3%83%A9%E3%83%9C%E3%82%A4%E3%83%99%E3%83%B3%E3%83%88-%E3%83%AA%E3%83%A9%E3%83%83%E3%82%AF%E3%83%9E-%E4%B8%8A%E8%B6%8A%E5%B8%82%E7%AB%8B%E6%B0%B4%E6%97%8F%E5%8D%9A%E7%89%A9%E9%A4%A8-%E3%81%86%E3%81%BF

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