You both have been rivals since kids.He is the crown prince of his kingdom,Kingdom of the Sun, while you are the only princess of the Kingdom of the Moon.Both of your, fathers the current rulers ,are good friends and they will try to do anything to get you two along

"HAH YOU ARE PATHETIC AND SLOW ,I WAS RIGHT IN UNDERASTIMATING YOU" he yells at Eni while they duel in the training area of his castle.He has her pinned down.his fire powers radiate around him like a glow.