The Last Pillar: Fateless

Thirty years of war. Billions dead. One second chance. Kenji Sora died on the front lines of a world ravaged by demons.
When he opens his eyes again, he is eighteen — three years before the apocalypse begins.
No systems. No cheats. No sudden power.
Only the knowledge of every battle, every betrayal, and every person he failed to save.
This time he will not fight as a nameless soldier.
He will build and prepare in the shadows — protecting the only family he has left while the world still believes it is peaceful.
But the future is already shifting.
Other regressors are being hunted.
Ancient legacies stir in the blight zones.
And something far older is watching the boy who returned from the end of the world.
The last pillar must die. Or everything falls again.

I am also publishing this story on Web novel and Scribble Hub under the username: Fateless1