DDK-174 After having my first time with my sister, I was restrained and tamed. Naohito Jinmiya.

Even at my age, I had no girlfriend and was still a virgin. My cute younger sister took care of me. One day, she suddenly confessed her love for me and kissed me. Since then, my sister's actions have escalated! One day, she restrained me to a chair, teased me with deep kissing and edging handjobs, and then took my virginity with intense cowgirl style. Instead of releasing the restraints, she put a collar and leash on me and made me pick up her underwear from the corner of the room. Thus, I was being tamed as my sister's sex slave...