
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

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.
After this stopped uploading around mid 2010s, author kept changing the story and added a lot of new details to her story progression. i remember reading 2-3 different versions after a certain volume including a new volume called Rose of a Hundred Days.
How interesting.
At first i thought that this was a reupload of Rose of a Hundred Days, but even this new upload is going on a different way from that upload making the story progress differently. I wonder if the difference comes from printed copies or she changed her whole mind about where to take the story further.
Thank you for the upload! I hope we can read the rest as well.
Rose of a Hundred Days is just chap 26-33 here.