FINH-071 A perverted obedient athlete who indulges in raw sex and mating.Eren, a half-beautiful half-beautiful synchro athlete with a tanned body.Eren Shiraki.

Yoshimura, who was the director of the synchronized swimming club, had been dismissed from his job six months ago for corporal punishment of a student. - Eren, a student of Yoshimura who worships him, comes to his house to ask for synchronized instruction. - However, the training gradually develops in a distorted direction, and Yoshimura, who cannot control his sexual urges, engages in insidious acts of obscenity, but Eren reveals his hidden masochistic talent. - It bloomed all at once, and she happily accepted it...