Is It Wrong to Try to Pick Up Girls in a Dungeon? on the Side: Sword Oratoria Vol. 8 (manga)

"Aria, go the fifty-ninth floor."
With that message, Levis leaves Aiz with still no answers but a claim she can find what she needs deeper in the dungeon.
The deadly clash on the twenty-fourth floor over, Aiz and the others return to Orario to deal with their losses. However, Aiz and the rest of Loki Familia are not long for the surface as they declare an expedition to unknown dungeon territory: Floor fifty-nine. Preparations begin and Aiz finally makes progress in her relationship with Bell...