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.
Characters & voices
Stephan
Main
Ouji Suzuka
日本語
Chao
Main
Anna Yamada
日本語
Sea Shachou
Supporting
Ryouta Yamasato
日本語
Mybae
Supporting
Kavka Shishido
日本語
Robelt
Supporting
Yuuichirou Umehara
日本語
Neptune Kokuou
Supporting
Kenta Miyake
日本語
Juneau
Supporting
Shunsei Ota
日本語
Henshuu-chou
Supporting
Anna Tsuchiya
日本語
Omede Taishi
Supporting
Kukkii!
日本語
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Details
- Format
- Film
- Episodes
- 1
- Duration
- 90 min per episode
- Status
- Finished
- Season
- Summer 2025
- Aired
- 2025-08-15
- Studio
- Studio 4°C
- Source
- Original
- Favourites
- 18
- Also known as
- เจา คนเล็กผจญเงือกใหญ่