Ragna the Bloodedge
When he was young, Ragna lived in a church with his younger siblings Jin and Saya, and was watched over by the sister of one of the Six Heroes. At some point, Saya became very ill and Ragna decided to look after her, and in turn spending less time with his brother. Jin eventually grew jealous of Saya for being able to spend a lot of time with Ragna, and he began to hate her.
Soon after Saya became sick, the church was burnt down by Jin and Yūki Terumi, who also cut off Ragna's right arm and kidnapped Saya. At some point, Ragna was bitten by a vampire, which supposedly turned his blonde hair into white. He was later found by Jubei of the Six Heroes where he proceeded to train Ragna on how to control the power of his newly acquired Azure Grimoire which replaced his lost arm and repeatedly stated that although the item was a part of him now, the power was not his to command yet. For the next few years, Jubei trained Ragna to control the power of the Azure, being periodically watched by Rachel, who requested Jubei to take care of him. During the time, he met Taokaka as a child. When his training was at last complete, Ragna had finally come to the decision to depart on his journey. But before the three would part ways, Jubei took Ragna to the burnt down church and handed Ragna two items once belonging to a hero named 'Bloodedge': his jacket and the sword - Blood-Scythe. Feeling the weight of the man that gave hope to the world and the Six Heroes, Ragna finally takes off, his training now complete.
Ragna has a deep hatred for the Novus Orbis Librarium, and travels from city to city destroying their bases; due to this, he has become a world-known criminal and has a bounty on his head "large enough to buy a small country", according to Jin. Despite this, he seems to travel through cities by night without much fear of being detected or captured by the NOL or any vigilantes.