Forced to be confined in the household of an insatiable yakuza to pay off her younger brother's debt, the older sister is made to serve his body endlessly. "Whenever I feel like fucking, you better stick your ass out right away! No matter where, no matter when, as soon as I want to cum inside, you take it immediately—hard thrusts, instant creampie!" Days filled with overwhelming pleasure continue endlessly. Her lustful body never settles, always craving more. Every time his cock forces its way into her, she reveals her most lewd and depraved self, sinking deeper into overwhelming ecstasy each time.