While lying down, my half-sister Reislin walked into my room without even knocking. Wearing a provocative school uniform, she turned around, causing her short skirt to flutter, revealing her long white legs. blemishes. Reislin quickly slipped off her lace panties and "shot" straight into my face. Perhaps knowing what I was going to do next, the younger sister once again entered the room so quickly that I didn't have time to hide the fact that I was masturbating with her panties.