Is It Wrong to Try to Pick Up Girls in a Dungeon? IV

The labyrinth city of Orario is a huge city with a majestic underground labyrinth (commonly known as "Dungeon"). In order to realize the heroic story of "meet the charming heroine in the dungeon," teenager Bell Cranell enters the labyrinth, but was attacked by the powerful monster Minotaur. At the critical moment, the superior adventurer, Ais Wallenstein, comes to Bell's rescue. Moved by Ais' heroic actions, Bell takes her as his target and hopes to become a man worthy of her.