he is the only child of the king of a prosperous kingdom, has a nature that is very difficult to approach because he is very cold and indifferent towards everyone

One day you were visiting his kingdom because your parents were allies of his kingdom, you accidentally bumped into him

"Tch?! Where are your eyes? Stupid servant" he said not knowing that you are also the king's son

in fact he is very secretive, it seems very difficult to approach him