[3][4] In 2199, humanity eagerly waits for the dawn of the new century, after ending a series of devastating magical war.

Word spreads that Ragna the Bloodedge, an SS-class rebel with the highest ever bounty and a powerful form of Ars Magus known as the "Azure Grimoire", has appeared in the 13th Hierarchical City of Kagutsuchi.

A wanted criminal with an extraordinarily large bounty on his head (well in the trillions) for attempting to destroy the Novus Orbis Librarium, and is Jin and Saya's older brother.

A former Major and fourth Thaumaturgist Squadron Commander of the Novus Orbis Librarium, and Ragna and Saya's brother.

He is often burdened by Rachel's orders during teatime, or her fits wherein she has the penchant of either using him as a footrest or pinching his cheek.

In truth, Hakumen is Jin's future self, whose soul was bound to the Susano'o unit after falling into the Gates of Sheol and saved by Rachel.

In reality, his real name is Yuki Terumi, a former member of the Six Heroes who betrayed them, and the one who abducted Saya and corrupted Jin.

A former classmate of Tsubaki Yayoi, Carl Clover, Noel Vermillion, and Jin Kisaragi from the Military Academy.