ChaO (2025)

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.

Trailer

Cast

Ouji Suzuka in ChaO

Ouji Suzuka

Stephan (voice)

Anna Yamada in ChaO

Anna Yamada

Chao (voice)

Kavka Shishido in ChaO

Kavka Shishido

Maibei (voice)

Yuuichirou Umehara in ChaO

Yuuichirou Umehara

Roberta (voice)

Kenta Miyake in ChaO

Kenta Miyake

King Neptunus (voice)

Shunsei Ōta in ChaO

Shunsei Ōta

Juno (voice)

Anna Tsuchiya in ChaO

Anna Tsuchiya

Editor-in-Chief (voice)

Kunihiro Kawashima in ChaO

Kunihiro Kawashima

Ambassador Omede / Photographer / Shop Owner (voice)

Ryota Yamasato in ChaO

Ryota Yamasato

President Shi (voice)

Gallery

ChaO backdrop image 1

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FAQ

When was ChaO released?

ChaO was released on August 15, 2025.

How long is ChaO?

ChaO runs for 1h 30m.

What is the rating for ChaO?

ChaO has an average rating of 8.2/10 on Streambay.

What genre is ChaO?

ChaO is classified as Animation, Fantasy and Romance.

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