God of Ice and Fire

During the awakening ceremony, I was judged to be a useless Yuan warrior who could not cast spells. No one knows that ice and fire are sleeping in my body at the same time - forbidden twin species. When the winter demons emerge from hell, I use the body of a warrior to exert the power of a mage. One punch freezes, one punch burns the city. They say it's a paradox, I say - This is the embers that burn out the winter.