The story takes place after the wandering warrior Leina's championship has ended. The royal court's magician Alicia uses black magic and opens a doorway to another dimension. From that door, a rabbit lures Alicia into another dimension called Melfairland. Melfairland is holding a tournament of its own to award out a Queen's Blade, and Alicia enters the tournament in order to find a way to return to her own world. (Source: ANN)

In the near future, massive hostile beings called Fiarem are waging war on Earth. To defend the world from this alien threat, Japan unleashes a special team known as Ragna Strikers—six young women wielding advanced weaponry and the ability to grow to gigantic sizes. Ragnastrike Angels follows Ayano Anemori and her friends as they live their daily lives and battle the violent Fiarem.

Long ago in the nine provinces of Kyushu, a calamitous event was prophesied to take place: falling comets would exhaust the spiritual energies of both the heavens and the lands and thus bring about an age of chaos upon the world. But contrary to the prophecy, the comets passed by with no calamity taking place. At the same time, as if touched by the phenomenon, a boy was born in a remote village of the Sokei region by the name of Ouriku. Twelve years later, as the memories of the event have faded from people's minds, the Reikenzan clan—one of the five supreme sects of the nine provinces—decides to hold an examination in order to gather the most talented individuals fit to become disciples and eventually sages. Hearing about this news, Ouriku and his servant Ouchou head toward the site, unaware that the organizer Oubu, despite her elegant appearance, is infamous for being extremely irresponsible and carefree; hence, making the trials in the examination unpredictable. Reikenzan: Hoshikuzu-tachi no Utage follows the story of Ouriku as he journeys through these trials to become a powerful sage.

In the kingdom of Rimgarde, two mysterious giant robots begin a duel that erases nearly all human life before they disappear. Twelve years later, the young empress of Enastoria, Yuinshiel Asteria, works tirelessly to maintain both her authority and the support of her citizens. But the peace of Enastoria is threatened when survivors of Rimgarde arrive. Armed with giant robots called Regalia Gear, they look for Yuinshiel's adopted sister, Rena. The latter is forced to reveal herself as not just a Regalia Gear wielder, but a real Regalia—a human capable of transforming into a giant robot—and the culprit behind the fall of Rimgarde. Suddenly caught up in an international dispute, Yuinshiel must preserve the security of her country while also protecting Rena from those who wish to abuse her powers. However, by fighting for her sister, Yuinshiel risks triggering the same calamity that once destroyed Rimgarde. Amid such a precarious situation, the two girls push their bond to its limits as they fight not only for themselves but for the world's safety as well.