Decades ago, Dungeons burst into the world, warping reality and unleashing monsters in the 21st century. Only Adventurers-beings with supernatural abilities-can enter these deadly labyrinths to reclaim their power. But among them, Yukimiya Yuuya is an outcast: a man marked by misfortune, despised even by the system that grants abilities to the chosen.

Everything changes when he discovers that he possesses a unique class, one unknown as: “Hero”. With abilities that defy the laws of Dungeons.

Will a hero from another world be able to adapt to the modern world?

Is it possible to have a harem in the modern world?

An urban fantasy epic where power comes at a price, love is a double-edged sword, and every Dungeon hides a secret that mankind ignores.