STARS-952 While their parents were away, my NEET brother raped, imprisoned, and made her completely obedient to her cheeky step-sister gal Yuna Ogura

Due to her parents remarriage at an advanced age, a gal suddenly became her sister-in-law. Naturally, I didn't get along with the recluse and NEET me, and he looked down on me, which caused me to resent him. One day, when my parents went on a trip for 2 nights and 3 days, I gave my younger sister sleeping pills and raped her. From that day until her parents come back, she is thoroughly confined and trained. I trained him until he obeyed me.