Tsubomi is a member of the swimming club and practices every day. Natsume, a beautiful teacher who advises the swimming club, is aiming for such a bud. Natsume uses her position as a teacher to sexually harass Tsubomi. Thinking that Tsubomi is serious about swimming, she accepts it. Tsubomi, who is straight, unconsciously reacts to Natsume's disgusting tongue technique and learns of a lesbian orgasm. Like it, will it fall into another gentle lesbian intercourse with a man?
