Renji Takeda, once a soldier of the JSDF, wakes in a world where every five floors holds a city and every descent draws you closer to death. Now, alongside Alina—a beautiful young mage with secrets of her own—Renji must fight to survive, uncover the labyrinth’s origin, and decide whether to keep chasing a way home… or forge a new purpose underground.
What if survival meant becoming the very hero he never wanted to be?