You're describing merchant class Precog. Didn't need a backstory for it.
However I have a lot of things to pick apart in the backstory.
He did not have good intentions. He used his power over fire to take over the town and claimed his sister as his queen
Why? Why did he take someone in the first place? That generally results in getting killed by the person. Not to mention most villages have a large enough selection of combat oriented abilities. Just fire is pretty weak. Even a God Class Pyromancer will still die to a single spear.
Especially Oauk. But one person stood up, his mother wouldn't allow this animal to steal her daughter. The villain killed her on the spot. Oauk cried out as his mother died before before she hit the ground.
Again. Why did he target? This just seems like plotfuel. Also that would be baboon/fox. That would be pretty weird culturally. A fox would normally go for a canine or feline if it did have a fondness of other species.
Ouak didn't know what was going on, but he did know what he had to do. He took his dead fathers sword and its stealth on his back. He knew he had to try to stop this villain before he could do any damage. He knew he would likely die.
He attacks a random wanderer simply because they have an appearance similar to a creature in a dream. That.. Isn't a good sign of mental stability.
He confronted the monster and drew his sword. The villain laughed and threw fire at the boy.
The issue with fighting pyromancers is AOE attacks. Can't dodge when everything around you is on fire. Also throwing fire isn't common when you lack hands. Easier to just spear fire up from the ground.
Ouak could see all of it, every detail, all at once. He dodged the two balls of fire, and his sword was at the villain's throat. Ouak pressed lightly, and the villain began to sweat.
Again. AOE. Also how can you see someone with fur sweating?
Ouak felt the rage behind the overwhelming clarity. He was going to kill this animal before he could bring any harm. Right before he finished the deed, staring into the fear within the fox's eyes, his mother called out to him. That's enough. Ouak was filled with anger at this turn of events, here was the fox who would kill his mother and kidnap his little sister, yet his mom would save him from his hand.
Literally the only thing any villager would see is your character randomly assaulting a wanderer and the wanderer defending himself. Also again. AOE. There's a reason Shielders or Antimagi are used to counter Mancers.
Ouak kicked him down and said this, "I know what you are. I know what lays within your heart. I can see it. I can see you, and through you. You will never return."
Great time for the fox to roast you to a cinder. Too close to dodge. Too close to attack in time.
The horrified fox scampered away
Fiiiiiiire.
Ouak didn't know what had happened,
Yes he did. He realized one of his abilities was precog. Everybody has abilities.