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Chiikawa the Movie: The Secret of the Mermaid Island (2026) — Release, Cast & Review Status

Directed by Kei Oikawa · 2026 ·

Score Pending

Is the Celluloid review available for Chiikawa the Movie: The Secret of the Mermaid Island?

Chiikawa the Movie: The Secret of the Mermaid Island opened on Aug 28, 2026, but Celluloid has not published a verified editorial rating or composite score yet. Release facts and viewing options remain available below.

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Watch Trailer
Released
Runtime
1h 39m
Age rating
13+ (Indonesia) · PG (Singapore) · PG (Philippines) · ALL (South Korea) · G (Japan)
Cast
Haruka Aoki , Makoto Tanaka , Ari Ozawa , Yuka Iguchi , Takayuki Asai , Yuma Uchida , Miyuri Shimabukuro , Momo Harumi , Tsuguo Mogami , Minori Suzuki
Country
Japan
Language
Japanese

Also known as 映画ちいかわ 人魚の島のひみつ 극장판 치이카와: 인어 섬의 비밀 超剧场版吉伊卡哇：人鱼之岛的秘密 劇場版 吉伊卡哇 人魚島的秘密 จิคาวะ เดอะมูฟวี่: ความลับของเกาะนางเงือก CHIIKAWA: BÍ MẬT ĐẢO NGƯỜI CÁ

Where to watch

Chiikawa the Movie: The Secret of the Mermaid Island is listed as a theatrical release. Check cinema schedules for your city and date; streaming availability may differ by country.

Is a review available for Chiikawa the Movie: The Secret of the Mermaid Island?

An editorial review is not yet available. The composite score is a separate measure. It requires an editorial rating and at least one independent rating input.

What is Chiikawa the Movie: The Secret of the Mermaid Island about?

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.

Watch the Trailer

Chiikawa the Movie: The Secret of the Mermaid Island stills

Official production imagery supplied through TMDB, kept with the movie instead of split into a thin gallery page.

Chiikawa the Movie: The Secret of the Mermaid Island production still 1
Chiikawa the Movie: The Secret of the Mermaid Island production still 2
Chiikawa the Movie: The Secret of the Mermaid Island production still 3
Chiikawa the Movie: The Secret of the Mermaid Island production still 4
Chiikawa the Movie: The Secret of the Mermaid Island production still 5
Chiikawa the Movie: The Secret of the Mermaid Island production still 6

Images courtesy of TMDB. TMDB does not endorse or certify Celluloid.

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Chiikawa the Movie: The Secret of the Mermaid Island: frequently asked questions

Does Chiikawa the Movie: The Secret of the Mermaid Island have a Celluloid Score yet?

Not yet. Chiikawa the Movie: The Secret of the Mermaid Island has been released, but its composite score is pending. Any available personal editorial rating is displayed separately on the film page.

How long is Chiikawa the Movie: The Secret of the Mermaid Island?

Chiikawa the Movie: The Secret of the Mermaid Island runs 1 hour 39 minutes (99 minutes).

What is Chiikawa the Movie: The Secret of the Mermaid Island rated?

Chiikawa the Movie: The Secret of the Mermaid Island is rated 13+ in Indonesia, PG in Singapore, PG in the Philippines, ALL in South Korea and G in Japan. These are the official classifications as recorded on TMDB; check your local classification board for content advice.

Who stars in Chiikawa the Movie: The Secret of the Mermaid Island?

Chiikawa the Movie: The Secret of the Mermaid Island is directed by Kei Oikawa and stars Haruka Aoki, Makoto Tanaka, Ari Ozawa, Yuka Iguchi, Takayuki Asai.

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