Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka Gaiden: Sword Oratoria  

Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria, ダンジョンに出会いを求めるのは間違っているだろうか外伝 ソード・オラトリア, Is It Wrong to Try to Pick Up Girls in a Dungeon? Sword Oratoria

The narrative of Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka revolves around the journey of the most powerful 1st class adventurer, Ais Wallenstein, also known as the "Sword Princess," and her determination to achieve even greater feats alongside her companions from the Loki Familia.

Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka Gaiden: Sword Oratoria has been published in English as Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side: Sword Oratoria by Yen Press under the Yen On imprint since November 1, 2016.