He discovers his sister masturbating on the phone and fucks her by blackmailing her

When this guy gets home he finds his sister masturbating on the phone while talking to her boyfriend, with whom she is making a video call to show him what a slut she is. The brother tells her off for being such a slut and blackmails her to fuck her in exchange for promising not to tell her parents about it, because they would be very angry. The sister submits and starts eating his cock before getting on his dick so that he can shove it deep inside her pussy. The guy doesn’t intend to stop penetrating her until he has cum inside her.