
Yupp, this one is like a prequel to the main story. Sorry tho that I can't provide you the exact title of the manga, because I can't remember what the title was. But if you search the manga under the same author, I guarantee you'll eventually find it.
<spoiler>
The black-haired singer already had another man he loves. Then one day, the person who the singer loves accidentally hurt the white-haired thug's little sister.
The thug bro and his other thug friend then raped that person. Also torture him in the process...
He said it was to teach the person a lesson for hurting his little sister. But in reality, he actually raped him because he was jealous the black-haired singer loves that person.
Ahh... It's so confusing to explain.
You better read it yourself.
I would love them to be the main cople rather than that ass (╬ ̄皿 ̄)凸
Thug life man and prity singer ლ(´ڡ`ლ)