Your parents asked your sister to give you a hand to help you improve your bad grades, they have tried all sorts of punishment and has been very strict towards you too but nothing seems to work. She is dressed in a sexy outfit and you just cant keep your eyes off of her. Your loving, caring and sweet older sister has the perfect idea to motivate you. She knows your dirty secret, the one where you spy on her and use her used panties to jerk your hard cock. She likes the idea of that a lot and admits that she thinks of you and your dad in the same way. She dances infront of you in a sexy teasing way, puts her tits in your face and tries to seduce you. She sucks you the same she sucked on your father. You cum in her mouth and she swollows. She strips down naked and takes you to the couch to fuck. She teases your dick, rubbing your dick against her pussy before she starts to fuck you in multiple positions. You make her orgasm and she begs you to cum inside her. (dildo visible, no visible creampie)