Demon Subduer Season 1: The Grey Wolf Calamity

Modern-day office drone Lu Changgeng dies from overwork and is reborn into the Great Qian Dynasty, a world overrun by demons. On the brink of death, he binds the Longevity System. Starting as a lowly constable in the border town of Baiyun County, he slays a century-old fox demon and quells a tide of corpse puppets, rising to prominence through sheer hardcore combat prowess and earning a summons to the Qingzhou Demon-Subduing Bureau. He forges a human-demon pact with Yun Meng, a demon enchantress coerced by the Grey Wolf King. Shen Yanqiu, an inspector of the Demon-Subduing Bureau, initially fixates on the belief that Lu Changgeng is in league with demons, shadowing him and clashing at every turn—but as she witnesses his integrity and sense of duty time and again, admiration and love gradually take root. A female disciple of the Nanyang Sect follows at his side, and at last, atop the walls of Qingzhou City, he wields the Golden Body of Prison Suppression to slay the millennium-old Grey Wolf King and win the Battle for Qingzhou.