Chiikawa the Movie: The Secret of the Mermaid Island (2026)
映画ちいかわ 人魚の島のひみつ
Director: Kei Oikawa
Cast: Haruka Aoki, Makoto Tanaka, Ari Ozawa, Yuka Iguchi, Takayuki Asai
More About This Film
Chiikawa the Movie: The Secret of the Mermaid Island is the first feature film adaptation of Nagano's hugely popular Chiikawa manga and anime. Chiikawa, Hachiware, and Usagi receive an invitation to a mysterious island promising food and rewards, setting the friends on a whimsical summer adventure.
Kei Oikawa directs a story written by Chiikawa creator Nagano, expanding the franchise's distinctive combination of adorable characters, playful humor, adventure, and surprisingly dark fantasy elements. The film introduces a larger cinematic setting while retaining the tiny heroes' familiar personalities.
- Japanese title: Eiga Chiikawa: Ningyo no Shima no Himitsu.
- Directed by Kei Oikawa.
- Nagano wrote the screenplay and story.
- Animation production is associated with CygamesPictures and QTORY.
- The film was released in Japan on July 24, 2026 with a runtime of 99 minutes.
Where to Watch
Chiikawa the Movie has received theatrical distribution in Japan and other Asian markets, with home availability still developing by region.