Wake up your sister with the cock in her mouth

Seeing her sister sleeping is something that makes this guy very hot, because the girl is really good and he is morbid to see her so helpless. That is why it cannot be contained and he puts his cock in his mouth. When she does, the sister wakes up and looks at him with the face of saying "what the fuck are you doing, you bastard?", But then it turns out that we discover that the sister is a good whore and that she starts to give her a good blowjob to suck her off. We didn't see the run, so we assumed that the slut swallows it all.