My stepfather's wife is teasing me about my stepfather. Please forgive me now...

Miho, her wife, is told by her father-in-law Kazuo, that she has been unable to move because she hurt her back, so her wife, Miho, ends up going to take care of her husband, Kenichi's parents' house. Kazuo, who had been thinking about lewd things since Kenichi introduced Miho as his wife, finally puts his plan into action. She pretends to be disabled and touches Miho's body all the time, and makes her wipe her cock to prevent her from getting into the bath... In the end, Miho, who is sleeping, tired from being cared for, attacks...