Reborn 999 Times, I Became an Encyclopedia of the Apocalypse

After 999 cycles of reincarnation, I've lived through the fall and rebirth of civilization: zombies roaring, genes mutating, natural disasters laying waste to cities... Every death has become a new chapter of knowledge. Now that this life has begun anew, I won't run for my life anymore. I'll wield my pen like a blade and turn all my apocalyptic experience into a survival guide. This time, I'll write the final chapter of the apocalypse with my own hands. I won't be a pawn. I swear to become the one moving the pieces, using my knowledge of the apocalypse as a weapon to build the strongest doomsday fortress!