
"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
好玩
以奥特曼的内核,画皮江户川柯南,传递爱与勇气、正义和善良,并携手俺妹开启正能量都市爱情及惊悚、奇幻一体的甜剧大冒险!
搞半天最后还是没完结啊
行
真的太好玩了,辉君帅气的很舒适,煌美酱真的很漂亮,期待赶紧上线后续,别逼我跪下!
挺好玩的 樱桃酱看的我很舒服
好玩
玩完之后感觉自己的智商变低了
This game is amazing, I've seen two full playthroughs and deeply enjoyed both. I love the bizarre uncanny visuals as well as the unique sound design! I love Teru and Kira a lot, as well as Json and Nina. There are some quite odd and probably offensive parts, as well as the weird obsession Luna has with Teru, but outside of that I love this game. Tsugunohi is also a great series, and I look forward to more installments from both series.
俺不中嘞,作者求求你让礼美复活吧。。。为什么她非得死不可啊,我一直选的礼美的选项,可是最后她还是死了我真的真的接受不了。。。
Related
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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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