Synchro in danger!?

Takayuki Yamada

Kankuro Shindo

Mirai Moriyama

Norio Tatematsu

Eita Nagayama

Masatoshi Tanaka

Yuma Ishigaki

Go Takahara

Mao Miyaji

Asako Onishi

Tomoya Ishii

Futoshi Ishizuka

Yuu Kashii

Kyoko Hanamura

Naoto Takenaka

Mr. Isomura

Akira Emoto

Mama (of a bar)

Tetta Sugimoto

Sugita (swimming club adviser)

Kaori Manabe

Sakuma Megumi (synchro club adviser)

Akira Fuse

Head Teacher Yamaoka

Saki Aibu

Hayakawa Atsumi

Hitomi Takahashi

Shindo Miwako

Kazuyuki Asano

Shindo Kanichi