Is It Wrong to Try to Pick Up Girls in a Dungeon?, (Light Novel) Vol. 20

A student rebellion has broken out! Discontent with a new tax on orichalcum quickly builds in the School District, rising to a fever pitch when all contact with Orario is suddenly cut off. But the festival-loving gods aren't about to pass up a chance like this. It's time for a tournament to decide whether Orario or the School District will come out on top. Unsure of which side to join, Bell asks a certain knight for a favor...