GS-266 - My drunken sister fell asleep with her panties showing, so I couldn't resist and fucked her until the end

My college student sister came home drunk and passed out with her panties fully exposed. Seeing her so vulnerable, I lost all self-control. Pretending to take care of her, I started touching her, and she actually began to moan! Thinking I was her boyfriend, she even begged for a French kiss in her sleep. I couldn't hold back anymore and fucked her until we both reached the peak.