ChaO
“He's on the hook.”
Synopsis
In a futuristic world where humans and mermaids coexist, the life of mild-mannered office worker Stephan is upended when he is suddenly proposed to by Chao — a princess from the mermaid kingdom. With no time to make sense of what's happening, Stephan soon finds himself living with the unpredictable, wholehearted Chao, and her sincere love begins to break down his emotional barriers.
Trailers, Teasers & Extra Featurettes
Official promotional previews, behind-the-scenes footage, and exclusive clips.
Official Trailer [Subtitled]Official
Type: Trailer • Published 2026-02-12
Top Cast
Explore Star Directory →
Ouji Suzuka
Stephan (voice)
Anna Yamada
Chao (voice)
Kavka Shishido
Maibei (voice)
Yuuichirou Umehara
Roberta (voice)
Kenta Miyake
King Neptunus (voice)
Shunsei Ōta
Juno (voice)
Anna Tsuchiya
Editor-in-Chief (voice)
Kunihiro Kawashima
Ambassador Omede / Photographer / Shop Owner (voice)
Ryota Yamasato
President Shi (voice)
Release History & Theatrical Window
Streaming Window: 74 DaysAdelaide Film Festival
Festival / Special Debut
April 10, 2026
Wide Cinema Exhibition
June 23, 2026
VOD & Digital Platforms
September 22, 2026
Physical Home Media
Key Information & Fast Facts
- Director
- Yasuhiro Aoki
- Screenplay & Story
- Saku Konohana
- Original Score
- Takatsugu Muramatsu
- Original Title
- ChaO
- Country of Origin
- Japan
- Spoken Languages
- Japanese
- Runtime
- 1h 30m
- Production Studios
- STUDIO4℃
Creative Leadership & Key Crew
Yasuhiro Aoki
Saku Konohana
Takatsugu Muramatsu
Takanori Nakajima
Eiko Tanaka
Department Leadership Roster
Yasuhiro Aoki
Director
Takatsugu Muramatsu
Original Music Composer
Eiko Tanaka
Producer
Saku Konohana
Screenplay
Takanori Nakajima
Director of Photography
Age Classification & Content Advisories
Official viewer rating standards and content warnings across international classification boards.
NR: Not Rated — Evaluated outside standard classification boards.
International Certification Matrix
Parental Guidance for children below the age of 12.
Not Rated — Evaluated outside standard classification boards.
Production Stills & Gallery
Official cinematic photography and background stills for ChaO.
Featured In Curated Collections
Editorial lists, community rankings, and cinematic collections featuring ChaO.
Latest Releases
Now Showing at Cain Cinema
Cain Cinema features a 4K UHD picture on a 120" (16:9) screen, and a 7.2.4 Dolby Atmos audio experience.
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Frequently Asked Questions About ChaO
Quick factual answers about cast, synopsis, director, box office, and release information.
What is ChaO about?
In a futuristic world where humans and mermaids coexist, the life of mild-mannered office worker Stephan is upended when he is suddenly proposed to by Chao — a princess from the mermaid kingdom. With no time to make sense of what's happening, Stephan soon finds himself living with the unpredictable, wholehearted Chao, and her sincere love begins to break down his emotional barriers.
Who directed ChaO?
ChaO was directed by Yasuhiro Aoki.
Who stars in ChaO?
The principal cast of ChaO includes Ouji Suzuka, Anna Yamada, Kavka Shishido, Yuuichirou Umehara, Kenta Miyake.
When was ChaO released and how long is it?
ChaO was released in 2025 with a total runtime of 1h 30m.
Who composed the musical score for ChaO?
The original motion picture soundtrack for ChaO was composed by Takatsugu Muramatsu.
What is the age rating and content advisory for ChaO?
ChaO holds official age classifications: FR: TP; IN: UA (Parental Guidance for children below the age of 12.); US: NR (Not Rated — Evaluated outside standard classification boards.).