Loading anime…
ChaO
Synopsis
The story
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.
FantasyRomance
Episode guide
1 episodes
Watch progress is saved in this browser.
01Episode 1Unwatched · AiredAired Aug 14, 2025Characters & voices
9 credited
Stephan
Main
Chao
Main
Sea Shachou
Supporting
Mybae
Supporting
Robelt
Supporting
Neptune Kokuou
Supporting
Juneau
Supporting
Henshuu-chou
Supporting
Omede Taishi
Supporting
Production staff
500 credited
Kouji MorimotoRobot Design
Kumi KodaTheme Song Performance
Hirokazu KojimaCharacter DesignHirokazu KojimaChief Animation DirectorHirokazu KojimaKey Animation
Yuuko SeraAnimation DirectorYuuko SeraKey Animation
Yasuhiro AokiDirector Yasuhiro AokiStoryboardYasuhiro AokiDesign Assistance
Sunao ChikaokaKey Animation
Hidetsugu ItouAnimation DirectorHidetsugu ItouDesign AssistanceHidetsugu ItouKey Animation
Tatsuya TomaruKey Animation
Takatsugu MuramatsuMusic
Hiroko YaguchiKey Animation
Naoyuki AsanoKey Animation
Hiroshi TakiguchiArt Director
Chengxi HuangKey AnimationThemes & motifs
AniList community tags
MermaidCast-Traits88%
Female ProtagonistCast-Main Cast79%
HeterosexualTheme-Romance79%
MarriageTheme-Other79%
Classic LiteratureTheme-Arts79%
Primarily Adult CastCast-Main Cast79%
Urban FantasySetting-Universe79%
Fairy TaleTheme-Fantasy79%
Male ProtagonistCast-Main Cast60%
ShipsTheme-Other-Vehicle60%
RobotsCast-Traits60%
Surreal ComedyTheme-Comedy60%
ShapeshiftingTheme-Fantasy60%
Community pulse
3.4K members
Score spread
10
20
30
40
50
60
70
80
90
100
Watch status
Current142
Planning2,556
Completed602
Dropped32
Paused23
More like this
AniList recommendations