Spoiler for ho*** people (but it's very red flag). I don't recommend reading it but I know you will
Spoiler!
At some point in the future, when they are already physical, ml gets very jealous. Because of that he is very rough with mc and doesn't let him rest for the whole night, even when mc begs him to stop. He wants to hurt him to make himself feel better and when he sees that mc is bleeding, he feels happy about it.
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
