ChaO

Set in a futuristic world where humans and mermaids coexist, the anime feature film ChaO follows Stephan, a mild-mannered office worker at a shipbuilding company whose life is turned upside down when Chao, a princess from the mermaid kingdom, suddenly proposes to him. Before he can make sense of it all, Stephan finds himself living with the unpredictable yet sincere Chao. As her genuine affection begins to break down his emotional barriers, an unexpected and touching romance unfolds.