Emi and Ryo have been married for a year, and Ryo does all the housework for Emi, who works outside the home. Emi is busy with work, and the couple hardly talk at home. Ryo tells himself that it can't be helped, and has been holding back his sexual desires. One day, Emi's mother, his stepmother, Nozomi, sees him masturbating. But then her hand reaches for my crotch...