
Well we all know that the Prince is the end game but what "if" tia in love with Carsein. What if the Prince in love in Jieu. Jieu have nobody except the Prince so she need love and support. And tia, she's already have everything, father love, power, all she need to do is choose a guy who love her. And a happy ending for tia and Jieu.
I wish..

I agree, their cat and dog relationship lol
And it's coming from me who liked tia and hoped her end up with carsein, i even hated jieun a lot and i thought she was annoying
But tia's character got seriously ruined near the ending, saying "goodbye carsein" just like that, jieun even gave up her holy power and lost her hair color to bring tia back to live and still got exiled, tia didn't even thank her, she only gave her confused and a tiny bit pitiful look, lmao
I hope jieun just end up with carsein

Aren't she's the one who seduse him? Do why she's the one who choose his fiance?

Well she never thought about it as romantic in the first place. She was able to support him as his Master. Now that she saw she was able to see he was getting wrong ideas about their relationship, like ^ said she's trying to build more walls. That scene with them was just his dream, but she doesn't yet return his feelings.
Every time I see baal, I scream