Swordmaster of the Graveyard

At first, no one believed the truth—that there was nowhere left to call home. Desperate for one last hope, humanity embarked on a harrowing journey only to face utter defeat. To change a ruined present, he must return to the past. "Today, we lost. But this time, we will not." Armed with the strongest hidden class, one man regresses to rewrite the fate of mankind.