Half a year ago, my mother remarried, so I had another sister. From the first time I met her, I was attracted to her beauty. Ms. Misaki has just become a full-time teacher. The final exam was coming up, and my mother asked Ms. Misaki to be my tutor. While tutoring, she discovered my pile of books and pornographic videos. Thinking that they would distract me, she decided to confiscate them all. Without books and videos to masturbate, I always felt uncomfortable and frustrated. Ms. Misaki also knew, and she even took the initiative to help me "discharge" all the sperm that had accumulated for a long time! And my abusive relationship with my sister started from there. Not only did she teach me subjects in class, but my stepsister also taught me "physiology". As a result, my grades have improved significantly, and I am always happy to be satisfied with my sexual desire every day...