He promises his sister to treat her well if she lets her pussy penetrate

The guy in the video's cock hurts so much from all the time he has not gotten hot that he does whatever it takes to convince his sister to fuck him. She tells him that if she lets her pussy penetrate, she will treat her very gently, pamper her and be as if she were his girlfriend. She gives in to the fantasy that her brother fucks her and although at first the uncle starts with a lot of cuddles and love, then he fucks her much harder and ends up filling her whole face with semen as if she were a cheap whore.