Dae-U finally gets his hands on Yu-Ri by "comforting" her after her teary breakdown. he doesn't waste time and gets straight to the raping right before Su-Heon's eyes who's been peeking glances at them like the cuck he is.
Su-Heon watches Jae-Geun grinding his dick against his wife's ass in what seems like a Doggystyle position through a hidden camera the Dae-U had set up. He rushes there to take her home all dunk & horny ready to be banged. Mid sex, in a way to awaken his cuck gene, he commands his wife to scream Jae-Geun's name while banging her roughly.