Wasaki has been married for two years. She started living with her father-in-law, Tadao, six months ago, and things were going well, but one day, Tadao fell into bed with a strained back. After that, every time he was touched by Wasaki, who was assisting him, Tadao, who hadn't been for a long time since his wife died, unconsciously got an erection. Wasaki, who has no sex with her husband, can't take her eyes off her father-in-law's crotch, and they finally get to know each other in the name of nursing care... The secret frustrations of two people who intersect. In the afternoons when my husband was not around, the tips of our tongues intertwined passionately were repeated...