Movie · 2026
Is Chiikawa the Movie: The Secret of the Mermaid Island based on a book?
Quick answer
Yes. Chiikawa the Movie: The Secret of the Mermaid Island is based on the manga Chiikawa by Nagano.
The movie was released in 2026.
The manga behind Chiikawa the Movie: The Secret of the Mermaid Island
Common questions
Is Chiikawa the Movie: The Secret of the Mermaid Island based on a book?
Yes. Chiikawa the Movie: The Secret of the Mermaid Island is based on the manga Chiikawa by Nagano.
Who wrote the book Chiikawa the Movie: The Secret of the Mermaid Island is based on?
Chiikawa was written by Nagano.
Should I read the book before watching?
If you like knowing the full story and characters first, read Chiikawa before you watch. Adaptations often change or cut plotlines, so the book is a different experience even if you've seen the movie.