Tatsumi is a high school student who lives on his own, until a merman named Wakasa takes up residence in his bathtub. His solitary lifestyle is turned upside down by the self-centered (but handsome) new roommate.

casts

Nobunaga Shimazaki

Yuuichirou Umehara

Yoshihisa Kawahara

Ibuki Kido

Kenjiro Tsuda