Rena, who lives with her married daughter and son-in-law, seems to have a happy life on the surface. However, she's not satisfied with her intimate life with her husband and secretly seeks solace elsewhere. One night, her son-in-law, Satoru, catches her in the act. Upon learning that his massive cock is too big for his wife, Rena, captivated by his unwavering manhood, convinces him to let her take care of his sexual needs, claiming it's to mend their strained relationship. Satoru is initially bewildered by this sudden turn of events. However, he gradually succumbs to Rena's seductive and relentless sexual prowess, finding himself captivated by her every move.
