For those who are curious to know how it looked in the novel (warning: it's drastic):
It wasn't translated clearly enough, but he literally said: "What I regret the most is that I didn't fućk you back then when we were in high school. You were so easy back then. Then I wouldn't have to bother with you now". Then he r*ped him in the most cruel and painful way, he was bleeding. It was so bad that mc ended up in the hospital. Side note: ml couldn't c0me in the end because he was disturbed by his own actions
Spoiler!
Underrated manhwas I recommend:
1. The Foul
2. No Moral (novel as well)
3. Circumstances of fallen lord (novel&manhwa)
4. I'll raise you well in this life
5. One roof two strangers