The more merchandise works with the story and helps you to re-experience, then the better it is. Ujsaido tells the story of the last of the Hessahn Grandmasters, Asari, and the rebuilding of the shattered sect. The inspiration for the Hessahn comes from the assassins of Hassan i Sabbah and the Ninja of feudal Japan, both topics that I've a considerable interest in. More importantly, Ujsaido is about conflict and at it's root, the reasons why we fight - why wars happen. Conflict brings change.
Conflict brings challenge.
Without overcoming challenge, being subjected to forces that test a character there is no transformation of character. There is no story. And I wanted to give validation to the conflicts. And a scenario was devised where three societies perceive each other as their mortal enemy. The existence of one is perceived as detrimental to the other.