Rena Fukiishi's invitation from her mother-in-law who wants her son-in-law's big dick all the time
Rena's daughter got married and started living with two households. The family is on good terms and outwardly they are happy, but... Unsatisfied with her life with her husband, she secretly comforted herself. One night, her son-in-law, Satoru, secretly peeked into the situation... When I asked her about her situation, she said that her dick was too big and would be rejected by her daughter. Rena is captivated by his stubbornness, and tells him that it is to mediate the relationship between her daughter and her husband, and arranges for him to have sex with her... Satoru is confused by the sudden incident. However, his heart is captivated by his mother-in-law's bewitching skills, which are present all the time...