When I Reincarnated, I Dived into the Blue Sea Aquarium ~Oga Aquarium Exploration Record~
This event has ended.

- Date
- Fri, Feb 27 – Sun, Apr 5
- Venue
- Oga Aquarium GAO
- Official website
- https://www.gao-aqua.jp/event/49230.html
- Source
- https://www.walkerplus.com/event/ar0205e587393/
A collaboration event between the anime film "That Time I Got Reincarnated as a Slime the Movie: Tears of the Blue Sea" released nationwide on February 27, 2026, and six aquariums in Japan. At Oga Aquarium GAO, one of the venues, various collaboration projects are prepared, including a campaign where you can take a photo of a hidden movie poster in the aquarium and show it to the reception staff to receive an original sticker, as well as exhibits of explanation boards and fish name plates, and photo spots where you can take pictures with character panels.
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