[My sister came back to her parents' house after fighting with her husband...] I was so excited by my sister's defenseless appearance that I wondered if she was trying to seduce me, even though we are brother and sister! Even though I knew it, I couldn't resist... What! Was she really inviting me? Before I knew it, she was asking me to do it, and I couldn't stop either... But it's dangerous! We're family after all! It's dangerous to cum inside! Crab-claw lock! ?