In 2077, the Red Fog Catastrophe swept across the world, and humans were reduced to food for aberrations. Retired security guard Liu Kuo was separated from his family and wandered alone for three months to survive in a desperate situation. He accidentally activated the [Lone Shadow Hunting Gun System]! Able to sneak and snipe, and instantly kill groups of corpses, he is a lone gunman in the apocalypse who can kill aberration lords by himself. I wanted to be alone and search the ruins to find my family, but instead of seeing the elderly and weak refugees die tragically, I was forced to activate the mutually exclusive [Ten Thousand Army Violent Soldier System]! If you are alone, your system will be fully activated and you will be invincible; if you gather with a crowd, your stronghold will rise and your legion will be formed. The dual systems will be switched frequently, and you will never flinch if you are mentally exhausted. Building fortresses, training elite soldiers, eradicating bandit gangs, and fighting against the tide of zombies, he built a steel city step by step from a lone gunman. He held a gun in his left hand to protect himself, and waved an army in his right hand to defend the people. Finally, he rebuilt the human order on the ashes and found his loved ones!
