Akari Mitani lives with her husband and father-in-law. After five years of marriage, they haven't been blessed with children, and her husband has taken to frequent smoking due to pressure from his father and work-related stress. One day, during the five minutes her husband steps out to smoke, the father-in-law takes the opportunity to forcefully creampie Akari in a desperate attempt to support her pregnancy efforts. The timing is perfect—her husband's smoking break overlaps exactly with the father-in-law's creampie sessions. In a strange twist of fate, he aims for pregnancy with ten consecutive creampie loads. While her husband casually smokes his cigarette down to the filter, Akari surrenders herself completely to her father-in-law's relentless creampie.