To repay her brother's debt, the sister is kidnapped and imprisoned by an insatiable yakuza man, forced into complete bodily servitude. Driven solely by her desire to save her brother, she must live as my woman for ten days. Whenever I want sex, she must immediately present her ass. Anytime, anywhere—whenever the man desires, he thrusts inside her and cums deep within. Days filled with overwhelming pleasure continue on. Her lustful body remains constantly aroused, never satisfied. With each brutal penetration, her body grows increasingly depraved and lewd.