Nothing really they still see Yulianna as their sister. they were shocked when they found out and tried to reach out but Lelia just rejects them and that was that. But Lelias love interest does take revenge for her though.
Yulianna is just clinically stupid she doesn’t really do anything on purpose or plans anything nefarious she’s just stupid and assumes everything is about her and ends up doing shitty things and she doesn’t even realize it which makes it so much more frustrating.

Nothing major just about the character personalities. Yulianna mostly being the most annoying bxtch in the planet.
Just speed read the novel Yulianna is a bimbo narcissist who makes everything about herself.
all her dialogues were just “how do I make this about me” and Ruth is just as stupid. He keeps enabling Yulianna even though she’s in the wrong he’s the worst simp ever istg
the twins have no hope for redemption the only one who actually ends up having regrets is the emperor but even then he’s still shitty cuz he tried making up to her in all the wrong ways. ╮( ̄▽ ̄)╭
Romance wise did not like it. I just feel sad for the other love interest cuz she only ends up with one guy and all the love interest are just in love with her and has to watch her be with the one she chose.