"Aquarium wa Odoranai" x "Sunshine Aquarium" 2nd Collaboration! Night-Only Experiential Mystery-Solving Event "Challenge from the Director" to be Held!!

Total downloads have exceeded 800,000. The second collaboration event between the free horror game "Aquarium wa Odoranai," developed and completed by its horror-averse creator, Orange, alone over eight years, and Sunshine Aquarium (Tokyo, Ikebukuro), a night-only experiential mystery-solving event titled "Sunshine Aquarium x Aquarium wa Odoranai: Challenge from the Director," has been decided!

This collaboration, held from October to November 2025, received a great response. This time, titled "Challenge from the Director," we will deliver a more immersive experiential event that leverages the special situation of a night-only aquarium.

Inside the aquarium, where performances reminiscent of the main game are scattered everywhere, this time, with the theme of "Challenge from the Director," a mystery-solving rally will be held, making the most of the night aquarium setting. The event is designed as a sequel to the first collaboration event, "Aquarium wa Mezamenai," allowing both those who participated in the first event and those challenging it for the first time to immerse themselves in the world of "Akuodo." Participants in the mystery-solving rally will also receive an original ending card, with designs changing between the first and second halves of the event.

Furthermore, we will welcome fans with an even greater volume than last time, including sales of original goods featuring illustrations drawn by the creator, Orange, and special collaboration menus with Tully's Coffee.

Enjoy the ending that awaits beyond the mystery in the mysterious aquarium you've wandered into again.

[Comment from Orange, creator of "Aquarium wa Odoranai"]

The first collaboration... the director's "I'd like to do it a second time, hehe!" has become a reality, and I, Orange, the original author, am more nervous than anyone. I can't thank the staff enough. Tell me anything you want me to do, I'll really do it. And the fact that there's a second time means the first time was well-received. Thank you to everyone who visited more than expected and always makes the companies buzz. Please make them buzz again this time.

Event Outline

Night-Only Experiential Mystery-Solving Event "Sunshine Aquarium x Aquarium wa Odoranai: Challenge from the Director"

・Date and Time: June 12 (Fri) - July 20 (Mon/Holiday) Weekdays: 16:00-19:00 / Saturdays, Sundays, and Holidays: 17:00-20:00

*Last admission is 30 minutes before closing.

・Location: Sunshine Aquarium Main Building

・Fees:

Adults (high school students and above) 2,600 yen - 3,200 yen, Children (elementary and junior high school students) 1,300 yen, Infants (4 years and older) 800 yen

*This collaboration can be entered with a regular admission ticket.

*Ticket prices vary depending on the admission date.

*Please check the event page on the Sunshine Aquarium official website for details.

*Mystery-solving rally is 500 yen (tax included)

・Event Special Website: https://sunshinecity.jp/aquarium/event_performance/event/entry-37195.html

Event Content

Mystery-Solving Rally

The popular mystery-solving rally from last time is even more powerful!

This time, the mystery-solving rally will be held as a special project titled "Challenge from the Director."

Can you correctly answer all the challenges posed by the director in the aquarium, enveloped in the world of "Aquarium wa Odoranai," and reach the truth?

Furthermore, all participants in the mystery-solving rally will receive one "Original Ending Card" featuring newly drawn illustrations for this collaboration!

・How to Participate: Please purchase a "Mystery-Solving Rally Sheet" on the reservation site "Asoview!"

Sales start from 10:00 on June 5 (Fri)

・Participation Fee: 500 yen (tax included)

*Detailed purchase methods will be announced later on the Sunshine Aquarium official website and official SNS.

・Participation Novelty: Original Ending Card

*Novelty designs differ between the first and second halves of the event.

*The rally and each novelty will end once supplies run out.

Original Ending Card

・"Penguins in the Sky" Tank Ver.

First Half: June 12 (Fri) - June 30 (Tue)

・"Jellyfish Drop" Tank Ver.

Second Half: July 1 (Wed) - July 20 (Mon/Holiday)

[Synopsis]

A letter arrived at Sunshine Aquarium.

The letter was from none other than the director of Bianca Aquarium. The letter contained encrypted characters on the Sunshine Aquarium's internal map, which seemed to be a message but could not be deciphered.

Sunshine Aquarium was recruiting people to solve this mystery and holding a mystery-solving event.

Can you solve all the mysteries posed by the director of Bianca Aquarium? —

Indoor Decorations / Outdoor Performances

From the entrance, Suzu and Retro's