The Kiritani family has a fiancée who is much younger. The daughter, Nao, is shocked by his youth on the day they meet, but she gets excited by her fiancé Ryōhei's boyish intentions. While her parents are away, she lets him touch her G-cup breasts and vagina, then gently gives him head. Unable to hold back their desires any longer, the two end up having prematurely...
