I started going out with my super shy step-sister who clearly likes me and has a super cute smile... But we haven't had sex yet... It's the first time our parents are away for two days and one night... This chance has finally come... Anyway, we're going to have sex! Anyway, we're going to have sex and my step-sister was so shy that she wouldn't even open her legs, but after we've had sex so much that she gets bored, she turns into a super slutty woman and says, "Cum inside me, big brother!"