
I like princess Hoya and all but there's this kind of dark feeling around her that I can't pinpoint..(;一_一).. meanwhile, the princes on the other hand are way too cute uwu.

From what I've read, she is either (1) a super cunning, crafty lady or (2) a super-duper, cunning, crafty lady.
-- It just depends on where her loyalties really lay and what her intentions really are in the end.
As it stands, there isn't enough to say what she really is (good sister or person/bad sister or person). There's just enough to say that she has out-right stated (in as yet untranslated future chapters) she has some rather dark intentions (that are believable of her). However, she hasn't followed through in actions enough to say yet if she's true to those dark intentions or actually weaving a clever deceptive plot for other purposes.
This story does a good job of giving her crap tons of motive to love/support Rayburn, but at the same time also giving her crap tons of motive to hate/betray him. There's also evidence to make you believe she would act selflessly for Rayburn/the country or believe that she would act completely in self-interest.
Kudos for that in character development, I suppose.
Either way, she can catch me if I'm about to fall down the stairs any day. ╮( ̄▽ ̄)╭
I just wish we all have someone like that, someone we can hug tightly when we are going through rough times, no words needed. Just a simple and warm hug can do, no?