Teaser trailer & guidelines released
The full-voice horror ADV game “Haruto Kaiya” by virtual singer Haruzaruka, affiliated with KAMITSUBAKI STUDIO/PHENOMENON RECORD, will be streamed for free on Steam on Wednesday, August 20th, 2025.
We have also released guidelines for posting videos and images for this work.
■The original theme song “(A)letheia” will be released for the first time in a teaser trailer narrated by Haruzaru Ka himself.
In conjunction with the announcement, we have released a teaser trailer for this work.
In addition to the narration by Haruzaru Ka himself, the new song “(A)letheia” written for this work has also been released for the first time in the video. Please also pay attention to the songs, whose expressive vocals, which combine tense sounds and breathtaking, make you imagine the thrill of the game’s main story.
We are currently accepting wish lists on the Steam Store. Please look forward to the immersive story that unfolds in full voice.
■ “Spring Ruto Kaiyo” Steam Store Page
https://store.steampowered.com/app/3813660/
■Teaser trailer for “Shun Ryuto Kaiyo”
https://www.youtube.com/watch?v=W4Pko8OPVRM
■An adventure game where you can escape from the Western-style mansion with the mysterious woman Haruru
The protagonist meets a mysterious woman named Haruru, and as he explores each room in the Western-style mansion, he faces a terrifying truth. The film, voiced by Haruzaruka, is characterized by its story that unfolds in full voice throughout, and a high sense of immersion through exploration elements. As you aim to escape from the Western-style mansion, enjoy the multiple endings that change depending on the hints you have obtained and the main characters’ choices.
■About “Spring Ruto’s Bizarre Night”
This is an adventure game where Haruru, a mysterious woman he meets at the mansion of Hikutsuki, and aims to escape from the Western-style mansion.
■Story
The protagonist receives a message from Yukie, who feels grateful for the events he has had during his junior high school days, and heads to a Western-style mansion in the mountains. The protagonist is woken up by a woman named Haruru at the entrance and faces the terrifying truth about this Western-style mansion…
■System
It features a full-voice story and a high degree of freedom and immersion by exploring rooms in arbitrary order. It features multiple endings, with hints that diverge depending on the protagonists’ choices as they aim to escape from the Western-style mansion.
■Character
Haruru[Haru]CV: Haruzaruha – The protagonist woke up in the Western-style mansion and looks a bit like Yukie. He has a cheerful and kind personality and is not good at making other companies realize their weaknesses.
Trill[Toriru]CV: Momono Sakiya – A black cat with Haruru in a Western-style mansion. It comes with a collar that was originally a pet cat.
The main character – A university student who is not good at socializing, but who does not forget to thank the people who are kind to him. He lives an ordinary day.
■Staff
Planning: KAMITSUBAKI STUDIO
Developer: Entergram
Cast: Haruzaruha, Momono Sakuya
Scenario: Haigami Minoru (Altasius LLC)
Character design and coloring: Kaomin
Composition and arrangement: Asahina Kento
Logo Design: Honchumasa
Theme song “(A)letheia”
Singing: Spring Saruha
Lyrics: Yanosuke (AFRO PARKER)
Composer: Masayoshi Iimori, Native Rapper
Arrangement: Masayoshi Iimori
■ “Shunryuto Kaiyo” Product Information
Title: Haruruto Kaiya
Genre: Horror ADV
Number of Players: 1
Platform: Steam
Release date: Wednesday, August 20, 2025
Price: Free
Planning: KAMITSUBAKI STUDIO
Produced by Entergram
Supported languages: Japanese
■Guidelines for posting videos and images
The following conditions are set for posting a gameplay video of the Steam game “Shunryuto Kaiyo” on the Internet.
By following the following points, you can post gameplay videos and screenshots of this game.
– Do not do excessive editing or editing that prevents you from correctly understanding the content of this game.
– Do not post for commercial purposes. However, monetization using the posted video streaming sites is not considered for commercial purposes only, as it is interpreted as this guideline.
– Do not include content that is contrary to public order and morals or combine it with illegal information.
– Do not post any elements that we have not disclosed, such as the results of modifications or analysis of this game.
– Do not unauthorized reproduction of videos or screenshots created by third parties.
*These guidelines will be updated at any time without prior notice. Please check the latest version each time you post a video.
Monday, July 21st, 2025 KAMITSUBAKI STUDIO/Nature Research and Development Department Established
■Spring Saruha Profile
A virtual singer who brings emotion into her singing voice and transcends genre boundaries.
Sometimes as strong as a platform,
Like a sometimes innocent little guy, he draws the hearts of his listeners with his powerful, illustrious singing skills.
■YouTube: https://www.youtube.com/channel/UCE7gtjLeZKNXLp5YURzYYeg
■Twitter: https://twitter.com/harusaruhi
■TikTok: https://www.tiktok.com/@harusaruhi
■About KAMITSUBAKI STUDIO
It is a creative label that brings together the cutting edge of online culture together with the next generation of creators, and operates a new era of artist management business. We have created an operational structure consisting of management staff who discover and develop artists, as well as marketing staff who have the know-how to operate YouTube and social media.
We collaborate with a variety of creators and artists, including virtual singers, singer-songwriters, composers, filmmakers, story writers, illustrators, designers, and other creators and “co-create” our works together with everyone who receives them, creating new creative live shows and works, and updating the music experience itself.
Official website:https://kamitsubaki.jp/
(Operated by THINKR Co., Ltd.:https://thinkr.jp/)
