Minori has been married to her husband and living with her father-in-law for four years. She is extremely happy with her married life, but there is one thing she is not satisfied with, which is the intimate relationship with her husband. They both agreed to have sex on Minori's ovulation day to make it easier for her to get pregnant. However, the intercourse is short-lived, and her husband only wants her to receive his sperm to conceive without considering her feelings. Despite her disappointment, she has no other choice. While taking a bath, she encounters her father-in-law. Realizing that his daughter-in-law is unsatisfied with the sexual aspect, he takes her down and compensates her with the pleasure that sexual intercourse brings, something her husband cannot provide. After each intercourse with her husband on ovulation day, she goes to her father-in-law to let him ejaculate inside her, filling the emptiness left by her husband with the ultimate pleasure that her father-in-law brings...