Ragna the Bloodedge is 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. In December AD 2199, several years after the Second War of Magic, a branch of the NOL was utterly destroyed by an SS-class rebel named "Ragna" also known as the "Grim Reaper", in an attempt to destroy the Librarium. The NOL, hoping to stop him, immediately announced the largest bounty ever, available to anyone who could capture him. Interestingly, Ragna possesses a powerful form of Ars Magus known as the "Azure Grimoire." This led the NOL, as well as the other fighters, to hunt Ragna not just for his bounty, but also his Azure Grimoire.

BlazBlue - Phase 0 ~Prologue~ is a single volume gift that came in the Japanese version of BlazBlue Continuum Shift II for Nintendo 3DS. This manga summarizes the first act of the novel BlazBlue Phase 0, telling the story of the first meeting between Ragna and Celica and later with Mitsuyoshi. Perfect companion material for the novel.> Part of the BlazBlue series( http://www.batoto.net/search?name=BlazBlue&name_cond=c&artist_name=Arc%20System%20Works&artist_name_cond=c&genres=;e9&genre_cond=and )

The boy who had everything taken away by the Novus Orbis Librarium which monopolizes power and governs humanity, obtains absolute power and declares war against the world. The story behind the possessor of the Azure Grimoire, the "Grim Reaper" Ragna the Bloodedge's battle begins!

The 15th Hierarchical City of Torifune is best known as the Military Academy for the NOL. There, future librarians train and hone their skills for whatever challenges may await them outside. The story centers around Mai Natsume, a girl who had just arrived late due to a week absence, but there seems to be several phenomena centering around her that could be more than just coincidence.