HUNTB-366 "You idiot virgin! You're coming inside her!" "I'm wearing a condom!" "The condom broke! Don't pull out! You're coming too much!" After rapid thrusting, the condom broke inside my sister's vagina...

She's full of herself but actually super kind. Seeing me struggle as a virgin, my stepsister offered, "If you're going to use a condom, I'll help you," and let me have sex to lose my virginity! But since I don't know how to control myself, I ended up thrusting like an idiot and broke the condom inside her. I thought it was still on, but she seemed to notice midway because it felt too good. But in the end, we did continuous unprotected sex… I came so much that sperm overflowed! Sorry! I'm a beginner, so please forgive me!