Reincarnated into such a world, Richt comes to a realization after encountering a certain event: this world is not a game, but an undeniable reality. For the sake of his own peace, he resolves to reach an undiscovered, unreached ending. To achieve this, Richt heads to the games hidden dungeon, utilizing his "Immortality" ability to relentlessly trample his enemies.Having overcome countless deaths to obtain numerous resistances and ultimate power, Richt—alongside heroines who, before he even realized it, harbor incredibly heavy, obsessive feelings for him—begins to challenge the unreasonable bosses and the cruel world unique to this death game!