The Returner's War Manual

Sergeant Kang Dohyun died at forty-two in the final battle against the Demon Lord, watching humanity lose its last war. Then he woke up at eighteen, on the day of the Global Awakening — fifteen years before the apocalypse. He has fifteen years of future knowledge: which dungeons break, which hunters betray humanity, which alliances fail, and exactly how the world ends. Armed with a soldier's discipline, a veteran's scars, and a detailed mental war manual of every mistake humanity made the first time, Dohyun doesn't seek glory or power. He seeks to rewrite the war. Every alliance he forges, every hunter he recruits, every threat he eliminates early — it's all strategy. One soldier's meticulous campaign to win a war that hasn't started yet, against enemies who don't know they've already lost once. Expect pulse-pounding combat, high-stakes confrontations, and characters pushed to their physical and mental limits. The action sequences are detailed and visceral, with each battle raising the tension.