ChaO
He's on the hook.
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.
Directed by Yasuhiro Aoki · Animation · Fantasy · Romance · 90 min · 2025
Trailer
Director
Yasuhiro Aoki
Writer
Hanasaki Kino
Studio
STUDIO4℃
Release
2025-08-15
Runtime
90 min
Genres
Animation, Fantasy, Romance
Full Plot
In this romantic tale, a mermaid princess is set to marry a human engineer, sparking tension between their two worlds. The union may bring about unexpected changes for both parties. As the wedding day approaches, the couple must navigate their differences and confront the challenges of their unlikely relationship.
Cast & Characters
Stephan (voice)
Ouji Suzuka
Chao (voice)
Anna Yamada
Maibei (voice)
Kavka Shishido
Roberta (voice)
Yuuichirou Umehara
King Neptunus (voice)
Kenta Miyake
Juno (voice)
Shunsei Ōta
Did You Know?
The film is produced by Studio 4°C and directed by Yasuhiro Aoki, with Shōgo Furuya as unit director.
Source: Wikipedia · verified 2026-08-03
On the review aggregator website Rotten Tomatoes, 85% of 26 critics' reviews are positive.
Source: Wikipedia · verified 2026-08-03
Critical Assessment
ChaO holds 8.3/10 on TMDb (11 votes). IMDb/Rotten Tomatoes/Metacritic scores will populate automatically via the site's daily refresh once available.
Not enough independent critic/audience score breakdown available.
Ratings as of August 5, 2026
Where to Watch
United States
Streaming data from JustWatch via TMDb. Availability changes often — confirm on the provider before watching.
AI Verdict
AI-generatedBased on TMDb's aggregated score (8.3/10 on TMDb (11 votes)), this is a data-driven snapshot rather than an editorial take.
Frequently Asked Questions
What is ChaO's Rotten Tomatoes score?+
ChaO holds a 85% critics' score on Rotten Tomatoes.
Is ChaO good? What are critics saying?+
ChaO holds 8.3/10 on TMDb (11 votes). IMDb/Rotten Tomatoes/Metacritic scores will populate automatically via the site's daily refresh once available.
How long is ChaO?+
ChaO has a runtime of 90 min.
Who directed ChaO?+
ChaO was directed by Yasuhiro Aoki.
Where can I watch ChaO?+
ChaO is available to stream, rent, or buy on Amazon Video, Apple TV Store, Google Play Movies, YouTube, Fandango At Home.
Fan & Critic Buzz
ChaO received mixed reviews from critics. While some praised the film's entertainment value, others were not as impressed. The movie was described as a "real pleasure" by one critic, indicating a generally positive reception.
Source: Wikipedia — Critical reception (CC BY-SA)
