My sister-in-law was cuckolded ~I'll make you cum as well as my big brother! ~

The Usui couple are laid off and end up living with their brother-in-law Kenji, who has returned to their parents' house. Unable to see Kenji as he is wandering around because his work is not going well, his wife Satomi is kind and approaches him, but her kindness really stimulates his inferiority complex... Driven by the urge to erupt, Kenji is a night raid, and Satomi is aiming to be alone. Suddenly, Satomi is taken away by her sexual desire, and she speaks up over and over again, feeling pleasure from Kenji's cock...