No,he is adopted and they didnt have a good relationship growing up Spoiler
The fl's father is gay and he was in love with the ml's father,thats why he adpoted him, just for your information( i found it in the comments'spoilers)
people say it's bad, but these manhwas are made to match certain people's freaks and lowkey I like it. So if toxic ahh dark romance ain't your type, don't read it. BUT PERSONALLY I LOVE THIS PLOT SM, DEFINITELY WOULD REREAD A FEW MORE TIMES
istg after all this and he still gets back with ralph like the original phantom of the opera, i will hunt down the author TT