Dungeon ni Deai wo Motomeru no wa Machigatte Iru Darou ka Gaiden - Sword Oratoria

Dungeon ni Deai wo Motomeru no wa Machigatte Iru Darou ka Gaiden: Sword Oratoria is a light novel series authored by Fujino Oomori, serving as a spin-off to his primary work, Is It Wrong to Try to Pick Up Girls in a Dungeon? Launched in 2014, the series was created to shift the narrative focus toward Ais Wallenstein and the Loki Familia, providing a parallel perspective on events occurring within the same world. It allows readers to explore the intricate internal politics and high-stakes dungeon exploration of a top-tier familia, deepening the lore established in the flagship series.

The character designs and illustrations for the series were provided by Kiyotaka Haimura, whose visual style is synonymous with the franchise's aesthetic. Haimura’s work captures both the intensity of combat and the nuanced character dynamics inherent in Oomori's writing. The series has been well-received by fans of the original property for its ability to stand independently while enriching the overarching story, eventually leading to its own manga adaptation and anime series.