Soulblood

​Appearance
Soulblood is a black, viscous liquid that pulses with dim, blood red light. It does not have any particular odour or taste, and is invisible to most detectors. It is cool and smooth to touch. When solidified, the physical and chemical parameters can be changed by the commanding entity. It resembles obsidian with red lines in this state.

​Production
It is normally produced by Reiters.

​Uses
Solidified Soulblood can be alloyed with steel. Doing so creates a nigh-indestructible, ultrahard material that is remarkably easy to work with. Concentration greater than 78% grant the alloy the ability to generate energy/force similar to Reiters. However, this has a chance to blow up like a ton of Fire Dust in a volcano.

Related to the above, the Asakura family has passed down their generations a method to bond Soulblood into metal using a one's blood and Aura as catalyst. The Aura Steel produced can be controlled by the wielder just like by a Reiter.