Manami Oura lives with her husband and father-in-law. The couple, struggling to conceive, face mounting pressure from the father-in-law and stress from the husband's job, causing his smoking habit to intensify. During the brief five minutes her husband steps out to smoke, the father-in-law suddenly takes advantage of the window, claiming he's helping with fertility efforts—delivering quick, back-to-back creampie after creampie. The timing perfectly aligns: each cigarette smoked matches exactly with one creampie. Ten surefire creampies to guarantee pregnancy. As her husband smokes each cigarette down to the butt, Manami falls deeper into forbidden pleasure with her father-in-law. A shocking, intense encounter unfolds in a single, heavy moment.