After having descended upon this world, the gods have created guilds where adventurers can test their mettle. These guilds, known as "familia," grant adventurers the chance to explore, gather, hunt, or simply enjoy themselves. Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka Gaiden: Sword Oratoria begins in Orario, the lively city of adventures. The Sword Princess, Ais Wallenstein, and the novice mage, Lefiya Viridis, are members of the Loki Familia, who are experts at monster hunting. With the rest of their group, they journey to the tower of Babel in hopes of exploring the dungeon underneath. Home to powerful monsters, the dungeon will fulfill Ais's desire to master her sword skills, while bringing Lefiya closer to her dream of succeeding Riveria Ljos Alf, vice-captain of the Loki Familia, as the most powerful mage in the land.

In the small village of Hinamizawa, Rika Furude and her friends live together in relative harmony. Beneath this mask of peace, however, lies a hidden darkness, one that Rika understands all too well. In this eternal summer, she has been witness to unspeakable horrors. Every time the clock resets, Rika must try to find the villain behind these senseless deaths before tragedy strikes again. However, trying to decipher a mystery when only half the clues are present proves time and again to be disastrous, and each time she believes that things will change, she inevitably fails. As the annual festival approaches, Rika begins her descent from hope to despair in her struggle to break the chains of fate entangling them all. [Written by MAL Rewrite]

Every day, Aya Asagiri thinks about killing herself. She is bullied relentlessly at school, and at home, her older brother Kaname physically abuses her to relieve the academic stress put on him by their father. One night, as she lies awake wishing for death, a mysterious website called Magical Girl Site appears on her laptop, promising to give her magical powers. At first, she dismisses it as a creepy prank, but when she finds a magical gun in her shoe locker the next day, she doesn't know what to believe. Deciding to take it with her, she soon runs into her bullies once again. But this time, desperate for anything to save her, she uses the gun—and her assailants are transported to a nearby railroad crossing, where they are run over. Aya's conscience is unable to handle the fact that she murdered two of her classmates with magic, and she desperately tries to understand the situation. However, when she finds herself in trouble again, she is saved by Tsuyuno Yatsumura, a classmate who can use magic to stop time. This duo has a lot to do: not only do they have to fight alongside and against other magical girls, but they also need to uncover the truth behind the website and the apocalyptic event known as "The Tempest" that is soon to occur. [Written by MAL Rewrite]

The princess who's been held captive by the Demon Lord's army is scheduled to be executed by the Demon Lord's relentless torture!