Mei Homura, a game designer who overworked herself to death, suddenly finds herself reincarnated in another world. In this world, there exists a unique profession called Dungeon Marquis, where one earns a living by managing dungeons. By fate—or misfortune—Mei becomes the master of Elmarl Dungeon, rumored to be an easy beginner-friendly dungeon. However, the danger is real: if the Dungeon Core is destroyed, Mei will die. Using her expertise in game design, she strategically raises the dungeon’s difficulty, creating traps and challenges to survive while carving her own destiny in this new world. A clever mix of strategy, survival, and world-building unfolds as Mei turns her knowledge of games into real-life adventure!