The mother-in-law, Hinami, warmly welcomes her daughter and son-in-law to live with them. However, the son-in-law had impure feelings for Hinami's ample breasts! One day, Hinami is caught masturbating by her son-in-law, who sees her sexual frustration. "You want to have sex, right?" Hinami is pressured into it by her son-in-law, marking the beginning of an affair within the family! Sex in the living room when the family is out, vibrator training under the table during family time, secret fellatio and paizuri through the kitchen, and at night, forbidden sex to make a baby while wearing see-through erotic lingerie! The daughter-in-law is betrayed, the father-in-law is deceived, and the son-in-law and mother-in-law continue to indulge in each other...
