"Welcome home, Master!" Asakura, an ordinary middle-aged man, picked up the zombie survival RPG "Concrete Jungle of Hazard," which reeked of being a trash game. By the next morning, the world had turned into a hellscape crawling with zombies just like that game! The middle-aged man, who was easily eaten by zombies, woke up reincarnated as a young girl, embraced by the game characters—the maids Sakuya and Nine—who called him "Master," and found he was in a "cheat" state where he could use game skills! Saving the world by defeating zombies and monsters while being pampered by maids in the safe zone of his own home!? Supported and cheered on by the maids' overprotective care, the strongest cheat young girl races through a doomsday world where concrete skyscrapers stand tall!