After years of brutal survival in the demon realm—rising from captive to feared Grand Duke—Sa Bigang is slain by the Demon King. But a desperate gamble buys him a second chance: he awakens back in the Central Plains, ten years before the demonic invasion that will annihilate humanity.
Once a timid, scorned instructor, Sa Bigang now carries the cold resolve of a survivor and the forbidden power of the demon realm.
As scheming nobles, corrupt students, and looming demonic forces converge, he must forge an invincible army, shatter old weaknesses, and exact vengeance on the Demon King who destroyed his life—before history repeats itself.
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