The Traitor who loved his Kingdom

{Half OC story/ Half Castle Cats}
Catnia was not the only kingdom to form. In fact, there was kingdom that had been around long before Catnia was ever form. Over the mountain range that was only dared traversed by wolves was a kingdom of peace for all who lived in it. Canines and felines were wary, but not so much that they refused to be at each other's sides.
That is, until the population was completely wiped out with only traces of their lives left, no bodies. The only surviver was labelled the reason behind it all by traveling knights who had come to investigate, and was sealed away by mages in the deepest part of the mountains cave systems.
At least a hundred years later, a child breaks the seal in the revived kingdom, occupied by towns and a systematic organization that hates the traitor's existence, and aren't going to just put him back in the cave this time.