Lone City Mechanic: Reaper of the Battlefield

Reborn into a parallel world on the brink of annihilation, eighteen-year-old Jiang Ji awakens not to a cheat system, but to the raw power of a Mechanic class. As monstrous beasts and demonic invaders swarm abandoned cities, transforming them into isolated death traps, he forges humanity's last hope with his own hands. Energy cannons. Power exoskeletons. Demon-slaying artillery. Robotic armies. Warships that blot out the sky. When the world expects surrender, Jiang Ji declares war. But after blasting through alien hordes to reclaim the homeland, he uncovers a horrifying truth: humanity's greate…