Avatar: Rebirth of the Strongest Firebender

Water. Earth. Fire. Air. People who can control one of these elements are known as benders. From them, four great nations were born — the Water Tribes, the Earth Kingdom, the Fire Nation, and the Air Nomads. Among all benders, only the Avatar can master all four elements. The Avatar acts as a bridge between nations, maintaining balance and harmony in the world. But a hundred years ago, the Avatar suddenly vanished. Without the Avatar’s protection, the Fire Nation began a relentless war of conquest against the other three nations — a war that has lasted nearly a century. It was during this era of chaos that Kahn, a modern soul, found himself reborn as a young firebender… — Description from novelcodex.org