Seishinken and Reikiken by Vlikmit Kovsh (Patreon)

The title of 'Blade Master' has little to do with the arcane talents of a swordsman and everything to do with their 'martial skill'. However, awoken of the Wakokujin discipline are familiar with a school of arcana called Soul or Spirit Blades. 

Though Seishinken and Reikiken both roughly translated into 'Spirit Blade'; they both have a wildly different meaning in the Wakokujin language.

A Seishinken; like Blade Master Reese Akagi, is an awoken swordsman able to harness Quintessence ,or 'Reiki' in the Wakokujin tongue, from their soul and infuse it into their blades for a variety of arcane techniques and abilities.

Reikiken which means roughly the same thing, is the specific arcana or Aethereal Arte, that allows a Seishinken do to this. Drawing reiki from the users and imbuing their essence into the blade as an extension of themselves.  Unlike traditional quantity, which requires a weapon or object be made of a material that can conduct aetheric energy, a Seishinken's arcana bounds the weapon temporarily to their spiritual anchor, making it an extension of themselves.

Though similar in the way the Rangers of Harimal and Lioncourt imbue arrows with aetheric energy, Seishinken create a stable, continuous link between the users weapon and spirit well. In addition, they are more easily able to draw upon their own elemental affinity and apply it to their weapons do to the stability of the link, where unstable imbuements are often meant to create an explosive aetheric reaction.

Those who have previously trained in such artes as imbue arrow and other projectiles that rely upon this reaction often find it hard to master Reikiken, despite the strong similarities between them.