Chiikawa the Movie: The Secret of the Mermaid Island (2026)

Plot Summary

Chiikawa and friends set off on a whimsical summer adventure to a mysterious island said to hide a long-lost mermaid secret. What starts as a fun getaway quickly turns into a heartwarming journey filled with surprises, gentle thrills, and adorable chaos. With sparkling seas, strange legends, and unforgettable encounters, the trio learns about courage, friendship, and the magic hidden in small moments.

Full Cast & Characters

Haruka Aoki

Chiikawa (voice)

Makoto Tanaka

Hachiware (voice)

Ari Ozawa

Usagi (voice)

Yuka Iguchi

Momonga (voice)

Takayuki Asai

Kurimanju (voice)

Yuma Uchida

Rakko (voice)

Miyuri Shimabukuro

Shisa (voice)

Momo Harumi

Furuhonya (voice)

Tsuguo Mogami

Shimajiro (voice)

Minori Suzuki

Siren (voice)

Momoka Terasawa

Hitoha (voice)

Sayumi Suzushiro

Futaba (voice)

Director & Crew

Official Trailer

Where to Watch Chiikawa the Movie: The Secret of the Mermaid Island Online

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Frequently Asked Questions