I Am an Exiled Immortal

(High martial arts, low fantasy + a male lead who grows over time + a book full of unresolved regrets) Year Five of the Mingguang Era. The purple moon hung high, and the golden star fell in the south. A sage once saw this strange omen and cried out in amazement that an immortal banished from heaven had descended into the world. Eighteen years later, Gu Yunze emerged from the wilderness, took up a blade, shouldered a burden, and met a young woman. At first, people said he was nothing more than a country boy of humble birth who had gotten a little lucky. In the end, people called him a peerless talent, an immortal banished from heaven who surveyed the rise and fall of Great Wei and sat firmly at the summit of the world.