Spoilers from the novel

After he pimped him out and ryujin got gang raped, a few days later he said to him this:

"Guess what I'm thinking? I want to string you up and do you. Hang you from the ceiling by your neck, strip your lower half, and pound you hard.
Ever been submerged in water? Hung from a cliff? When your feet don't touch the ground, it's terrifying. You cling to anything you can grab. I'll be the only lifeline you can hold onto. Ill shove my cock in your hole and wrap your legs around my waist. If your grip weakens, I'll toss you aside and push you to the brink of death. Get it? Can you picture it? I'm not one for long explanations.
I prefer action. Curious? Wanna try now?"
Ryujin shook his head frantically. His wide eyes grew wet. He writhed in pain from the choking, struggling to escape Shin Haebeom's grip.

"Please...!"

"Choose. Get raped here by me, or go humor the old man for a bit. Your ass getting wrecked or your thighs getting groped-which is better?
Pick. The choice is yours."

Disgusting with capital D