I recommend the Nine Yang Sword Saint to you. The main character, Yang Dingtian, was a high school student who possessed a body of nine suns that was one in a billion. The Yang fire in his body was extremely vigorous. On the night of his birthday, his body suddenly self-combusted. Then, he transmigrated to another world and became the Nine Yang Mystic Meridians that only appeared once in a thousand years. It was a world where martial arts were revered. I hope you like my recommendation. Muah ~