Sumire, who lost her husband, decided to live together at her daughter's couple's house. She lives a harmonious life together, but Sumire has one problem. It is the night life of the daughter couple. It's good that they're on good terms, but Sumire couldn't help but feel anguish at the voice of her daughter's joy that she hears every night, and she spends nights comforting herself. She was worried about her son-in-law's lower body that Sumire satisfies her daughter every night. One day when her daughter went out, when she looked into her son-in-law's room, he was masturbating. Sumire enters her room and calms down her husband who is in a hurry.
