Start time: 2017 screening start date: May 19, 2017
Production Company: Science SARU Genre: Family Kids
Voice actors: Kanon Tani, Shodai Shimoda, Shinichi Shinohara, Akira Emoto, Souma Saito, Minako Sumika, Daigo, Nobu
Staff: Director: Masaaki Yuasa, Screenplay: Reiko Yoshida / Masaaki Yuasa, Music: Takatsugu Muramatsu, Character Design / Drawing Director: Nobutaka Ito, Art Director: Koji Ohno, Flash Animation: Abel Gongora / Juan Manuel Laguna, Director of Photography: Baptist Peron, Composition and Arrangement in the Play: Shinichi Sakurai, Acoustic Director: Eriko Kimura, Production Producer: Choi Eun Young, Production: Kenji Shimizu / Keiji Ota / Masaaki Yuasa / Akihiro Arai, Chief Producer: Koji Yamamoto, Producer ： Yuka Okayasu / Junnosuke Ito, Planning cooperation: Twin engine
A junior high school boy, Kai, lives in a deserted fishing port town, Hinashi-cho, and lives with his father and his grandfather, a parasol maker. Originally living in Tokyo, his parents divorced and moved to Hinamachi, the hometown of his father and mother. Kai, who can't talk about her complex thoughts about her father and mother, is reluctant to go to school while holding her depression. The sole source of heart was to post the music he composed himself. One day, he walks with his classmate's country man and is invited to join the band "Siren", which they have formed. When I went to Mermaid Island, a reluctant practice area, a mermaid girl, Lou, appeared in front of three people. Lou sings happily and dances innocently. By working with Lou on a daily basis, Kai gradually becomes able to express his feelings. However, since ancient times, mermaids have caused disaster in Hinashi-cho. The unexpected creates a large gap between Lu and the townspeople. And the crisis of the town to visit. Can Kai save the city with heartfelt screams?