Is It Wrong to Try to Pick Up Girls in a Dungeon? Sword Oratoria, Vol. 3

Aiz and her friends make their way to the town nestled deep within the
Dungeon only to stumble upon a macabre murder! After determining that culprit
must be extremely powerful, the manhunt begins but everyone seems to think that
the Loki Familia might be the most likely suspects?! On the surface, Loki
embarks on an investigation of her own, delving deep into the sewers to get to
the bottom of a mystery that may affect the future of all her children--and
Orario as a whole...