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

Beneath the city of Orario lies a vast dungeon where adventurers seek wealth, fame, and chances to test themselves against monsters. Bell Cranel enters with a more romantic idea, inspired by his grandfather's stories about rescuing girls in dangerous places. Reality quickly reverses that fantasy when the swordswoman Ais Wallenstein repeatedly ends up saving him instead. Bell's adventures also draw the attention of powerful goddesses and their Familias, adding complications far beyond the monsters underground.