Sadly, this is yaoi world logic.
I forgot the title of this one yaoi manga but it’s terrible. Uke is a bad boy, his parents enrolled him to an all boys school. The seme is the student council president. Seme legit rapes the uke to control him, gives the uke to other students to rape. Seme fucks others in front of him. They do nothing but rape him, put him down and shit. I read spoilers that the seme and uke becomes a couple in the end— Like wot— You get raped daily by his “friends” and him and you become a couple with him— It’s totally way more messed up compare to Painter of the Night. Seungho at least won’t let anyone touch Nakyum.
I think it is tgis one
http://www.mangago.me/read-manga/danshiryou_no_omocha/

To those who are saying that Seungho and Nakyum should still be together need to evaluate what a healthy relationship is. The way people crave these toxic relationships is kinda gross now pls stop lol.