

ChaO
Overview
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.
Where to Watch
Keywords
Trailer
Cast

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)
Reviews(1)
Chris Sawin
@ChrisSawinApril 11, 2026
ChaO delivers in that it spans a wide range of genres and makes you feel a spectrum of emotions in the span of an hour and a half. Its unusual animation style makes it more memorable, since it doesn’t look like anything else out there and will be remembered for its extraordinary, one-of-a-kind aesth…
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