Director:

Kei Oikawa

Starring:

Haruka Aoki • 

Makoto Tanaka • 

Ari Ozawa • 

Yuka Iguchi • 

Takayuki Asai • 

Yuma Uchida • 

Miyuri Shimabukuro • 

Momo Harumi • 

Tsuguo Mogami • 

Minori Suzuki

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.