"Aquarium wa Odoranai" x "Magical Girl's Witch Trial" Collaboration Announced!

New information from Frontier Works Inc. (Animate Group)!

Frontier Works Inc. (Headquarters: Itabashi-ku, Tokyo; Representative: Masahide Tsuji; hereinafter "Frontier Works") is pleased to announce a collaboration between the puzzle-solving adventure horror game "Aquarium wa Odoranai" and the magical debate mystery adventure game "Magical Girl's Witch Trial," developed by Re,AER LLC.

Starting from Friday, March 27, 2026, a collaboration bundle of both titles will be available for a limited time.

Additionally, collaboration illustrations and social media campaigns are planned to be released during the collaboration period.

■ "Aquarium wa Odoranai" x "Magical Girl's Witch Trial" Collaboration Bundle Overview

"Aquarium wa Odoranai" has surpassed 800,000 total downloads, and in February 2026, which marked its second anniversary, a new title, "Aquarium wa Odoranai ~The Idol Who Wants to Die~," was announced.

"Magical Girl's Witch Trial" raised approximately 67 million yen through crowdfunding and has sold over 500,000 copies. Its Nintendo Switch release date has also been set.

This is a special bundle that brings together two highly popular adventure games notable for the dramas woven by their young female characters.

・Discount Rate: 5%

・Sales Period: March 27, 2026 (Fri) 12:00 PM – April 13, 2026 (Mon) 12:00 PM

■ Introduction to Each Title

"Aquarium wa Odoranai"

The free horror game "Aquarium wa Odoranai" was developed and completed over 8 years by its creator, Daidai, who dislikes horror. After its release in February 2024, it achieved 100,000 downloads in just two days. Fueled by gameplay streams and word-of-mouth on social media, it has now surpassed 800,000 downloads (as of March 2026)! A series of collaborative projects have been launched, including a drama CD, a serialized comic, and various merchandise. In February 2026, the production of a new title, "Aquarium wa Odoranai ~The Idol Who Wants to Die~," was also announced. The buzz continues to grow!

◆ Synopsis
On that day, a girl named Suzu and her best friend Lulu visited the "Bianca Aquarium," enjoying a guided tour accompanied by the director's wife, Chris, as a special privilege of their premium tickets.
Along the way, Suzu loses sight of Lulu and begins to search the aquarium, only to find they have wandered into a strange and eerie world completely different from the one they were just in...
As Suzu explores the terrifying aquarium where aquatic monsters attack, a woman in a military uniform carrying a sword, Retro, appears before her.
Although Retro is rude to Suzu, she is also searching for another girl named Kitty.
Will Suzu be able to find her best friend safely and escape from the aquarium...?
"Who is the traitor?"

【Product Information】
Title: Aquarium wa Odoranai
Genre: Puzzle-solving Adventure Horror Game
Platforms: Nintendo Switch™ / Steam®
Nintendo Switch / Steam Digital Version Release Date: August 1, 2025 (Friday)
Nintendo Switch Physical Version Release Date: October 30, 2025 (Thursday)

■ Price:
【Digital Version】2,200 yen (tax included)
【Physical Version】4,950 yen (tax included)
Format: Digital, Physical
CERO: "C" (For ages 15 and up)
Players: 1
Supported Languages: Japanese, English, Korean, Chinese (Simplified/Traditional)
Original Creator: Daidai
Development: Gotcha Gotcha Games, Frontier Works
Publisher: Frontier Works

■ Nintendo Switch:
https://store-jp.nintendo.com/item/software/D70010000098456

■ Steam:
https://store.steampowered.com/app/3675470/


■ PV: https://www.youtube.com/watch?v=SmAY_kdqJQY
■ Special Site: https://www.fwinc.co.jp/aqua-dance
■ Official Site: https://daidai7742.wixsite.com/aqua-dance
■ Official Social Media: https://x.com/aqua_dance_
■ Social Media Hashtag: #アクおど (#AkuOdo)
■ Copyright: ©daidaisan,Frontier Works,Gotcha Gotcha Games,2025

*Content is subject to change without notice.
*Company names, product names, and logos are registered trademarks or trademarks of their respective companies.

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"Magical Girl's Witch Trial"

A game from Acacia, an original brand from the scenario production company "Re,AER." It is a magical debate mystery adventure where 13 girls, captured as "witch" candidates, are forced to choose one among them for execution in a "Witch Trial."

The crowdfunding campaign for its production raised over 3,000% of its goal. The Steam version, released on July 18, 2025, has sold over 500,000 copies. Immediately after pre-orders for the Nintendo Switch version began, it topped the pre-order charts at various retailers, showing ever-increasing excitement!

◆ Synopsis

"Among you, there is a girl who has become a witch."

On the morning she was supposed to start her first year of high school, Ema wakes up to find herself in a dim cage.

With no memory of how she got there, she was imprisoned in a jailhouse on a remote island.

Ema and the other girls captured with her are in confusion.

An owl appears and declares,

"You have been identified as having the potential to be a harm to this world—

a 【Witch】."

"You will live here as prisoners."

The everyday life she had taken for granted collapses.

While living as a prisoner, Ema gets to know the other witch candidates, but then, a murder occurs.

The owl gathers the imprisoned girls and proclaims,

"We shall conduct a Witch Trial."

It was the beginning of an all-too-cruel game where the girls must select a 【Witch】

...that is, a target for execution,

from among themselves—

【Product Information】

Title: Magical Girl's Witch Trial

Genre: Magical Debate Mystery Adventure Game

Platforms: Nintendo Switch™ / Steam®

Steam Digital Version Release Date: July 18, 2025 (Friday)

Nintendo Switch Version Release Date: July 9, 2026 (Thursday)

■ Price:
【Steam, Nintendo Switch Digital Version】3,500 yen (tax included)
【Nintendo Switch Physical Version】4,400 yen (tax included)
Format: Digital, Physical
CERO: "D" (For ages 17 and up)
Players: 1
Supported Languages: Japanese, Chinese (Simplified)
Original Creator: Acacia
Development/Publisher: Re,AER

■ Steam: https://store.steampowered.com/app/3101040/_/

■ Official Site: https://manosaba.com/

■ Official X: https://x.com/13witch_trials

■ Social Media Hashtag: #まのさば (#Manosaba)

■ Copyright: ©Re,AER LLC. ,Acacia,2024

Nintendo Switch and the Nintendo Switch logo are trademarks of Nintendo.

©2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries.