Kanako Ioka had an unhappy life with her elderly husband, he seemed to have no energy left to have sex, to be able to satisfy Kanako, and even if he did, he seemed to be getting tired of his long-time wife, he would rather watch porn to crank his hand than to have sex with his wife.
One day, his brother-in-law came to live with his brother to facilitate his work, witnessing the lack of his sister-in-law, so he decided to help after having a little yeast in his body...