I just wanted to know where did he get those scar :( is it too much to ask???

i think the author explain about it when sungho fell of from the chair? or something like that and the lamp hurt his face. idk i don’t remember it that much

On Sunghos face? Didn't he do that in his room when his relationship with Dohyun came to an end in their school days. It was somehwere towards the end of that long backstory arc if I remember correctly.