DDK-174 After I Got Cherry Popped By My Little Sister, I Got Tied Up And Domesticated Nao Jinguji

A cute younger sister who doesn't have a girlfriend at a good age and still takes care of me as a virgin. Her sister suddenly confessed that she likes me and she kissed me. Since then, her sister's behavior has escalated! One day, her sister restrained me in a chair, and after playing with Berokisu and handjob, she took her virginity with a violent woman on top posture. In exchange for letting go of her restraints, my little sister put a collar and leash on me and made me go get the underwear she threw in the corner of her room. That's how I was tamed as her sister's sex slave.