In a post-apocalyptic world overrun by alien-crafted "Machine Lifeforms," humanity is preparing for its last stand. Forced to retreat to the Moon for safety, humans are pinning their hopes on a group of man-made androids known as YoRHa soldiers. Led by the all-purpose battle android YoRHa 2-gou B-gata "2B," the group will fight to take control of the Earth back from its invaders. As war against the machines rages on, the YoRHa slowly begin to see the first shards of truth underlying the brutal conflict. Facing the harsh reality before her, the unwavering warrior 2B starts to question her very existence and just how much she must sacrifice for the sake of humanity.

Mattsu and Yamma are two boys who live in Matsuyama. Their favourite pastime is looking for "the seven wonders of Matsuyama". One day, two men appear. What are the 7 hidden gems that they seek? Moburi, a high school girl who is like an older sister to the boys, also gets caught up in the adventure as this thriling story set in Matsuyama begins. Faced with all kinds of trouble, what will they choose for the future of their city?

The sequel will focus on the islands west of the city.

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.