Not really... i'd hate my brother too if i was a human sacrifice for a selfish purpose for him.. though it was the parents fault but you can't expect him to not have any hatred for his brother either..
Yea but we are talking about hating so much that he wants to kill him
maybe that's less of a conscious desire, like if he did love him but also resent him at the same time because of everything he had to go through for him. Intellectually, he'd know none of that was his bro's fault but instinctively, he might be looking for some way, any way to get away from that sort of feeling.
Doesn't help that we don't know if the curse explicitly requires that you want to murder someone, or if you just want them to get out of your life/head somehow.
Are you talking about the classmate hating seo yeon or seo yeon hating his own brother?
His own bro
Kinda weird of him to hate his brother this much just because their parents were fucked up in the head to perform a human sacrifice to heal the brother