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ChaO

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Movie 90 min per ep
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In a futuristic world where humans and mermaids coexist, ChaO follows Stephan, a mild-mannered office worker at a shipbuilding company, whose life 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. As her sincere love begins to break down his emotional barriers, an unexpected and touching romance begins to unfold.
(Source: GKIDS)

Hianime is the best site to watch ChaO SUB online, or you can even watch ChaO DUB in HD quality. You can also find Studio 4°C anime on Hianime website.
Overview:

In a futuristic world where humans and mermaids coexist, ChaO follows Stephan, a mild-mannered office worker at a shipbuilding company, whose life 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. As her sincere love begins to break down his emotional barriers, an unexpected and touching romance begins to unfold.
(Source: GKIDS)

Japanese: ChaO
Aired: Aug 15, 2025 to Aug 15, 2025
Duration: 90 min per ep
Status: Completed
MAL Score: 6.8
Genres: Fantasy Romance
Studios: Studio 4°C
Hianime is the best site to watch ChaO yes online.

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