Being in love with a man of a lower rank was perhaps the only problem in Yona's otherwise peaceful life as a princess, until her world is irrevocably changed and she is forced to flee from her sheltered existence.
Yona was a princesses of the country until her father was murdered by her close childhood friend, which has caused her to flee from the country with 1 of the other trusted guards. As time passed she became independent, learned how to defend herself, and to grow and be confident. With these they made their journey and gained allies along the way, And they also were a force to be messed with.
Akatsuki no Yona