[Mosaic removed] Ryo has recently become a little tired of her husband being too meticulous with his time. Even at night, she was unable to get used to her husband's special fetishes and secretly stored up her frustrations. One day, his brother-in-law Ryuji suddenly came home... Ryo sees through the hidden desire for help in her brother-in-law, a playboy, and is seduced by him, leading to a relationship with him. She continues to experience climaxes she has never experienced over and over again as the rhythm of his cock undulates violently, something that cannot be felt with her husband. Still, Ryo stubbornly tries to refuse the invitation...