Reika, a wife, is asked by her husband to take care of her father-in-law, who has fallen ill. However, it was actually to fulfill her husband's desire to be cuckolded... My father-in-law touches my buttocks while nursing, and entangles his tongue while chewing. Although he is subjected to vulgar sexual harassment, Reika desperately endures it for the sake of her husband. However, her body is gradually invaded by her stepfather...