Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, Vol. 1 (manga)

Aiz Wallenstein, the Sword Princess, ventures into the deepest parts of the labyrinthine Dungeon beneath the city of Orario, vanquishing its monstrous denizens with the blazing light of her sword. But when she meets a certain white-haired boy, the encounter will forever change them both.