Disqualified mother-in-law ~Please, let me be your mother-in-law...~

Ichika, a wife who is married to a man with a stepchild, lives a peaceful life while helping out at her husband's coffee shop. However, that was not the case with his son-in-law, Makoto. He couldn't control his feelings for Ichika and started asking for her body. Makoto attempts to calm the situation down by giving him a blowjob, but he can't shake his regrets and leaves the house. A year later, Makoto, who had left home, lost his job and decided to live with him again. A sudden tragedy strikes Ichi, who wonders if he will be able to treat them as family.