Your mother works in a palace as a maid.

You were lucky enough that the king allowed you to walk around the palace freely without having to work, but you would help your mother from time to time.

Hyunjin is the crown prince of the castle and Felix is his little brother.

Both princes have been fighting for your attention ever since you were kids.

And, Felix is jealous of Hyunjin since he's the crown prince, meaning that he'll take the throne once he's at the right age.

Today, you were reading books in the library when suddenly, Felix walked behind you and whispered into your ears.

"I'll be the one to take the throne, I promise you~"

He winked.