
what's actually the relationship between them like does he like taekyung weren't they kissing in that one chapter ?

Well... they're brothers by adoption it seems but... I don't recall the kissing...if they did, that opens another can of worms. I suppose it could be a nonbiological thing but it's still very strange and... strange. I hope it's nothing too weird going on with them, he seems to have good intentions for Tae-kyung but I suppose he can have good intentions and their relationship be questionable

So I have this theory, we know our mc seongah was a real person in the past but what if the idol seongah is actually a clone made by another devil working in the company who killed the mc and took his place. That would explain why she uses his name, I mean her being his sister also makes sense but it's way too predictable.
these two are my only source of happiness now