The world of AZsenshi is one filled with paradoxes, mythical being and mysteries taken for granted. Creatures that we may regard as only existing in old fairytales roam freely among men and women, but sometimes they wonder off in areas usually out off their reach: regions that make them dangerous to both their kind and humans, places they aren't used too. As a response to these kinds of mishaps, an organisation named Senshi was created in Senria (coresponding in our world with Japan), alongside with other organisations of the same kind in Britannia (Wakefield) , Francia (Vilgrin) and Newlands (Rune). What makes Senshi stand out is the one-man teams and the huge number of followers. The story revolves around the AZ branch of the Senshi organisation and the things Mikuni Hoshikuzu discovers about it that makes this particular branch special among the others.