Truth of Beauty Witch -Marine's treasure ship-

Adventure· Side Scroller· Action-Adventure· Realistic

Released Aug 2023

A miraculous collaboration between Houshou Marine and "Tsugunohi" has come to fruition! When the main character becomes a crew member of a pirate ship led by Houshou Marine and realizes a certain fact, you are struck by a series of horrors. Can you unravel the secret behind Houshou Marine's beauty?

90% positive · 107 reviews

Done

All announced content has been released

High confidence

Done

All announced content has been released

High confidence

Where to buy

Steam Updated 12 Oct 2026 $4.99

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Evaluation

Truth of Beauty Witch -Marine's treasure ship- is a collaboration horror game between VTuber Houshou Marine and the Tsugunohi series. It launched on August 11, 2023 as a complete, self-contained experience. The developer has made no announcements of additional content, expansions, or post-launch updates. The single developer news post corresponds to the launch announcement itself, and no further communications have followed. There are no unreleased DLC listings, no roadmaps, and no developer statements indicating future content. The game appears to have shipped as a finished product with no planned additions.

Evidence

Game launched on August 11, 2023. This is the only developer communication on record — a release announcement with no mention of post-launch content or updates.

news post · Aug 11, 2023 source content shipped

high

Store description presents the game as a complete, self-contained collaboration experience. No mention of DLC, seasons, updates, or future content.

store metadata · Aug 11, 2023 source ambiguous

medium

Media

Details

Developer

ImCyan

Publisher

Vaka Game Magazine

Achievements

—

Platform

Windows

Controller

—

Steam Deck

Verified

Players

Single-player

Adventure Side Scroller Action-Adventure Realistic Souls-like Anime Cinematic Cute 2D Horror Dark Psychological Horror Thriller Memes Funny

About this game

Houshou Marine × Tsugunohi

Houshou Marine, a very popular VTuber from hololive, and Tsugunohi, a horror game that invades your daily life, have miraculously collaborated.
A new experience of terror will strike you!

■ABOUT THIS GAME
"Tsugunohi" boasts a cult following on the Internet, with an astonishing 100 million video views.
With its innovative "just go left" game system, "Tsugunohi" has been the talk of the town as a completely new type of Japanese horror game.
Now, Houshou Marine, who has played many games in the "Tsugunohi" series, will appear in the "Tsugunohi" collaboration game.
A new chapter of horror unfolds as the secret of Houshou Marine's "good looks" is revealed.

■POINT
1）The "Tsugunohi" theme of "horror experiences that invade the everyday" has been retained, and Houshou Marine's charms are all over the place.
2）The experience of fear accelerates with each passing day.
3）There are also some small stories that fans of Houshou Marine's work will react to. Can you find them all?

■STORY
The protagonist finds himself a new crew member on a pirate ship led by Houshou Marine!
The main character is still delighted to see the real Houshou Marine's good looks, and he is hard at work.
However, a vague question arises in his mind.
Where the hell are the other members of the pirate ship?
He realizes something he shouldn't have, and one by one, horror after horror strikes him!

■PROFILE
《"Tsugunohi" series.》
A horror game in which the protagonist progresses sideways through various paths = stages, and his daily life is gradually eroded by fear. This is a popular masterpiece by ImCyan, who has created numerous horror games as an indie game creator.

《Houshou Marine》
She loves jewels, treasure, and money, and dreams of becoming a pirate and searching for treasure. She is currently a VTuber on land with the goal of buying a pirate ship.
She is a virtual talent who started her activities from the VTuber group "Hololive" in August 2019. She is active in a wide variety of activities such as live game playing and singing, and as of July 2023, she boasts 2.45 million registered users on her Youtube channel.

© 2016 COVER Corp./ImCyan/Vaka, Inc.