JUQ-326 I'm sorry. I'm going to have a baby with my father-in-law... —The father-in-law who fell into the unconscious seduction of his daughter-in-law and indulged in intercourse with internal ejaculation— Sumire Kuramoto

After two years of marriage, they are not on bad terms, but Sumire feels lonely because of her husband's indifference. When she was worried about trying to get her to turn around somehow, her father-in-law, Kazuo, gave her advice. However, her husband is indifferent no matter how much he invites her, and on the contrary, her Kazuo can't take his eyes off her. And Kazuo, who couldn't stand it while encouraging her disappointed Sumire... From that day on, the two continue their relationship while stealing her husband's eyes. Sumire is looking for her father-in-law's offspring instead of her husband.