Hiraga Daidai

"Do you have... time today too?" Minami, a member of the swimming club, is going on the attack for Kousuke, the hot-blooded coach of the swimming club! She's the daughter of an old acquaintance of his, and back then he saw her like a little sister. There was a time when he doted on her, but right now he's trying to maintain a professional relationship as coach and club member. However...!? Minami uses her own body in a ploy to spearhead the attack, and at last she breaks through her coach's defenses; and so together by the poolside, they... Presenting the debut work of a rising star! (Source: DMM)