No its not end yet, just the last episode of season 2. I just sad with the implication (reading using mtl) that all this times the one who got bullied is Yuwon. Hes ... kinda broken because he doesnt have anyone, he even as far altering his memories to makes eveything bearable. And then even Doohon is (was?) gone leave him when hes still in the high school (hes BACK I KNOW BUT MY MEOW-MEOW FEELING).
Well, season 3 is about Doohon's backstory and I kinda would need to tell u (I think everyone here already know tho) u cant put logic in him because he is ... not ... normal. Thats it. Still only 5 chapters in so not really deep enought on his backstory.
Found the raws, ANYHOW
spoilers is that Dohun was never bullied, Yuwon was the victim instead and he convinced himself that he was just "protecting" Dohun the entire time so he could feel better about it as a fucked up coping method.
Yuwon never had any friends besides Dohun and had always been a major punching bag for everyone around (The people in his class, his orphanage director, bosses at part time jobs)
Dohun is obsessed with Yuwon because he thinks that he's his "destiny". His mom told him about people's destinies in life (I skimmed the S3 raws) and after Yuwon ran to Dohun's aid when they were little kids Dohun decided that it was destiny that they'd be together forever. I don't know if it could be considered love but to him Yuwon is basically his entire reason for living. He only cared about going to highschool because he thought he'd be going to the same one as Yuwon so they could meet again.
S3 is still coming out so that's all we got now

Reading the raw and damn that chapter 60 broke me. I mean this whole story is THAT GOOD delivering psychological aspect of the genre. But daaamn. Chapter 60 broke me.