To repay her brother's debt, the sister is kidnapped and imprisoned in the household of an insatiable yakuza, forced into relentless sexual servitude. Driven solely by the desire to save her brother, she is pressured to become "my woman" for ten days, ordered to immediately present her ass whenever the man feels like fucking. Anytime, anywhere, whenever the men desire sex, she is instantly penetrated and forced to take creampie after creampie. Days filled with overwhelming pleasure continue endlessly. Her lustful body remains perpetually aroused, never satisfied. With each brutal penetration, her body grows increasingly depraved. Witnessing her helpless, lewd state, the men can no longer restrain themselves. She spends her days completely drenched in semen.