
"There are things better left unknown" — The hidden paranormal horror ADV by ImCyan, creator of "Tsugunohi", is now on Steam. Detective Teru and his sister Luna investigate cases in spirits' dream worlds. Enjoy mystery, comedy, and horror across 9 episodes and 10+ hours of content.
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"There are things better left unknown" — The hidden masterpiece by ImCyan, creator of "Tsugunohi," finally arrives on Steam
A hidden paranormal detective mystery is revived on Steam. Experience the diverse presentation and gameplay that laid the foundation for the evolution of "Tsugunohi" today.
A full-scale drama-style horror adventure game where the protagonists, paranormal detective Yumemi Teru and his sister Yumemi Luna, who possess the special ability "Dream Link" to enter the dream worlds created by ghosts after death, solve spiritual cases occurring in the city.
Inheriting the will of their late mother, Yumemi Mimiko, the siblings dive into the dream worlds to save those who "know too much."
This is a full-fledged story-driven ADV by ImCyan, author of "Tsugunohi," originally published on the game site "Game Magazine" (which also featured "Angels of Death" and "Noel the Mortal Fate") from fall 2016 to summer 2018. Unlike "Tsugunohi," this work features exploration, mini-games, and various gameplay elements.
This package includes all episodes released at that time (Episodes 1–9; the 2018 special "The Case of the Mermaid" is not included). It serves as a perfect introduction to ImCyan's unique world for both long-time and new fans of "Tsugunohi."
While using the familiar side-scrolling system of "Tsugunohi," this game incorporates unique story elements, settings, and game systems.
◆ Fascinating Ability Settings
Teru's "Dream Link": The ability to enter the dream worlds created by spirits
Luna's "Curse of the Red Thread": Supports returning from dreams to reality
◆ A blend of horror and comedy
The protagonist works as a host in Shinjuku in a surprising turn
Deep human drama themed on "Shikiyoku(lust)"
A unique balance of humor and horror
◆ Authentic Investigation and Deduction Elements
Gathering information in various places
Gradually revealing complex mysteries
A serialized mystery story that deepens over time
The deep bond between Teru and Luna, the mystery behind their mother’s death four years ago, and the truth of incidents involving the "Curse of the Shikiyoku" and "SHIKIYOKU".
The story starts in a high school horror setting and unfolds across diverse locations including Shinjuku's host district, Akihabara, and forbidden lands, evolving into a serious, heavy narrative.
The responsible paranormal detective Teru (CV: 横割れスプーン)
The innocent yet jealous Luna (CV: 真宮ひな)
Their mysterious late mother, Mimiko (CV: 西野五月)
Various unique supporting characters
9 episodes in total
Around 1 hour of playtime per episode
Over 10 hours of total playtime
From Episode 1 "The Case of the Missing High School Girl" to Episode 9 "The Case of Mimiko Yumemi's Disappearance"
Enjoy the grand narrative experience unique to serialized works, with different settings and incidents unfolding in each episode. (Note: The series is currently unfinished.)
※ Please read before purchasing (About future updates) ※
This package includes Episodes 1–9, originally released up to 2018. It does not include the special episode "The Case of the Mermaid" or any content from Episode 10 onward. As such, the series remains unfinished.
The developer, ImCyan, has expressed a strong intention to resume development and complete the story. Future episodes will be released as Steam DLC once completed (release date and pricing are currently undecided).
We sincerely apologize for the long wait and deeply appreciate your patience.
Please look forward to the continuation of the series at your own pace.
Any updates will be shared through Steam News or the official X account.
— Thank you, as always, for your support.
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: Japanese, English, Simplified Chinese
Engagement
Hours played at review time, across 40 reviews with recorded playtime.
Reviews
Themes across 40 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
恐怖内容不多,生草点特别多太有趣了我好喜欢(
第5話までプレイしての感想です! 個性豊かなキャラクター達との一癖も二癖もある会話が楽しい…!ギャグ感が強い話もありますが、ホラー展開ではグッと締めてくれると言いますか…メリハリがあるので展開が気になる!ちょっとした選択肢や探索的な要素、アクションパートもあるので『つぐのひシリーズ』よりもゲームとしてプレイしている感が強く感じられるなぁ…といった印象です。『つぐのひシリーズ』が好きな方ならきっと楽しめると思いますし、推しキャラも出来るのではないかと…!現状プレイ可能な物語は第9話までという事らしいのですが、この先の展開も楽しみにしております!
第一章很不错,本以为题材老旧会令人提不起兴趣,实则剧情把控的很不错,恐怖和诙谐并行,很久没有见到这样的游戏了,我再玩玩,有缘再写评论。
剧情很精彩,就是没有后续,啥时候出后续
+
我是来补票,很有仲间由纪惠那部日剧《圈套》的风格,搞笑+怪异的剧情很抓人眼球 如果给我个评价,那只能说 “神中神”
This is a remake of an old game, translated into English and partially simplified to reduce playtime. Unfortunately, it seems there won't be a next installment for a while, but hopefully new episodes will be added in the future. It's really fun!
Loving this series so far. Amazing work from ImCyan and co. https://youtu.be/345f7sswhuk?si=1CyQTTVL0VW2qDZR
666,但是我的后续第十章呢?
这是一部相当优秀的游戏,虽然玩法单调,但是会有让人想要玩下去的欲望,人物刻画很优秀,樱桃酱,前辈,露娜....每个人物都相当优秀,剧情很棒,我玩过很多恐怖游戏,这一部和以往的翌日不同,他是喜剧悲剧的复合体,恐怖内容反而没这么明显,干脆说没啥恐怖的,不过有些地方会让我感到生理恐惧(剧透)狐狸那里,如果是我真正去接受那份考验,我可能会被迷失在其中吧,刺杀朋友的嘲笑,对自己信念的考验,是我,无法下手推进剧情,(比起鬼怪跳杀什么的 ,无法拯救的无力感,关系断离更恐怖吧 )第九章打完心里也有一种很难受的感觉,不过不影响这是一部神作,希望后面几个章节作者可以好好的制作,为这个游戏画上完美的句号
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Trends
Concurrent players on Steam, sampled daily since tracking started.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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