The wife doesn't allow sex, so the son-in-law has to ask his mother-in-law to "solve" it

Masao has not had sex with his wife for a long time, every time he brings it up, she refuses. Masao's desire keeps growing but he doesn't know how to solve it. The next day, his mother-in-law came to visit. It had been a long time since Masao had seen his mother-in-law, but she was still as beautiful as before. With his mother-in-law visiting, Masao's wife refused to let him have sex, but after much pleading, she agreed for him to do so when her mother left. However, Masao couldn't resist until then. Seeing his mother-in-law showering, her beautiful body was too much for him to handle, so he had to use her underwear to masturbate. But as he was masturbating, his mother-in-law opened the door and caught him. Now he could look closely at her seductive body.

Her large, round breasts showed no signs of aging, her firm buttocks, slim waist, the ideal model for him. After being caught, his mother-in-law took him outside to talk. Masao told her about his sexual frustration from not having sex for a long time. Feeling sorry for her son-in-law, his mother-in-law decided to help him by using her mouth to satisfy his needs. But can his long-standing desire be easily resolved like that? The next evening, Masao went to his mother-in-law's room, wanting to have sex with her. With her husband gone for so long, now enjoying another man's penis, his mother-in-law was also aroused. And their twisted relationship began from there. His mother-in-law decided to stay and live with Masao and his wife to satisfy her son-in-law's needs every day...