Arisa, who lives with her daughter and son-in-law. As she diligently does housework as usual, her eyes suddenly fixated on her son-in-law's crotch. She sits down with a pounding heart, but her head is full of her son-in-law's crotch. One day, when she goes to the room to give her son-in-law his laundry, he is taking a nap. She tried to leave the room, saying "Oh dear," but just as she was about to leave, her son-in-law rolled over. A slippery, protruding, large son-in-law's crotch appears, and Arisa can't take her eyes off it, and gradually escalates, thinking "just a little, just a little," and before she knows it, she is stuffing her son-in-law's thing into her mouth and savoring it...