Hisako came to visit her daughter and her husband's apartment for the first time in a while. - Although it appears to be a used apartment, it was purchased by my daughter and her son-in-law. - Hisako, who was relieved that her daughter and her husband were doing well, told them that she wanted to see her grandchildren soon, but her daughter became angry and left her seat. - His son-in-law says this to Hisako, who is flustered. - I have never had a night life. - Hisako apologized for her mistake, but the atmosphere became awkward. - At night, Hisako witnesses her husband masturbating in his underwear, which he had been wearing earlier. - Hisako, thinking that she is feeling so lonely because of her daughter, ends up helping her son-in-law ejaculate. - Speaking of the son-in-law, his erotic acts for a while ignite the fire, and he ends up having sex with Toshiko while she is sleeping. - Hisako is reluctant, but she gradually begins to feel the need to do so due to her inability to speak and the frantic caress of her son-in-law. - Hisako refuses to have it penetrated, but the moment her son-in-law's erect dick penetrates her, she cums from how good it feels...