ROYD-173
The step-sister works as a tutor, teaching the subject "physiology" to her younger brother
Half a year ago, my mother remarried so I gained an older stepsister. From the first time I met her, I was attracted to her beauty. Sister Misaki had just become an official teacher. As the final exam was approaching, my mother asked Sister Misaki to tutor me. While tutoring me, she discovered my collection of pornographic books and videos. Believing they would distract me, she decided to confiscate them all. Without the books and videos for self-pleasure, I always felt uncomfortable and frustrated. Sister Misaki knew this and even took the initiative to help me release all the built-up sperm. And my inappropriate relationship with her began from there. Not only did she teach me in class, but she also taught me the subject of "physiology." Thanks to that, my grades have improved significantly, and I am always happy to satisfy my sexual desires every day...