Is It Wrong to Try to Pick Up Girls in a Dungeon?, Vol. 12 (light novel) - Fujino Omori, Suzuhito Yasuda

And so the boy begins to run again.Bell has grown through combat with his greatest rival. A rank up, a denatus, a new nickname...as he draws attention from the people and deities of Orario, the young adventurer receives a letter."A mission...an expedition?" Bell has reached a higher level, and he must therefore take on an even more challenging adventure. The order from the Guild leads him toward a new stage.And so, a faction alliance sets out for the Dungeon. Alongside his companions, Bell faces new floors, new monsters, and new unknowns.