I suddenly found out my sister's secret. When I opened the door, I found her masturbating while sniffing my underwear! She burst into tears as soon as she found out! I tried to calm her down, but we ended up having sex! I ejaculated inside her vagina and her uterus was covered in sperm, so she's definitely pregnant! Forbidden incest with my Ke'ai little sister! We had sex to make a baby without telling mom and dad!