The story takes place in a harbor town where a gloomy middle school student named Kai meets a mermaid named Lu.

Hiroya Munakata (Sho Aikawa) is the leader of the yakuza group Munakata-gumi. After 10 years since the big fight, Hiroya Munakata’s non ...

Raku Ichijo (Kento Nakajima) is an only son and a high school student. His father is the leader of yakuza group Shuei-gumi. Raku Ichijo ...