The eldest son of Shiraishi family, Kazuo, his wife, Maki, and his younger brother, Kosuke, who are of different blood, gather for the third anniversary memorial service of their father-in-law. After the meal, the three of them continue to exchange trivial conversations while drinking. Drunk, Kazuo retires to the bath, while Kosuke, pretending to leave, approaches Maki at the entrance. Under the same roof, how will Maki deal with the unpredictable situation between man and woman!? Here is the definitive version of the eroticism of married women, sent to you by the FA pro!!