Characters roles can change every audience's perspective

Y'all keep on saying Cain is a sus, obsessive, stalker and so so just cause he's obviously the 2nd lead. But looking at him as the main characters' pov, surely, y'all gonna say "he's handsome, loves Jooin unconditionally, concern, sweet, and a perfect bf protecting his lover".

It's all about the characters roles that changes your perspective about the person.

As for me, whether its the main lead or the 2nd lead, idc. Just treat Jooin right, he deserves it.