Twelve year old Sei has hit puberty and is quickly becoming sexually aware, sometimes not as privately as he'd like; erections in school and other inopportune times plague him. He talks about it with his school friends, Kinta and Nyanko, in between their feuding over the affections of classmate Yumi, but can't figure out what to do about it.

Cast

Masahiro Hisano

Sei

Jun Kunimura

Sei's Father

Michiko Kawai

Sei's Mother

Ayumu Saito

Nao's Father