Kiyohime is a mercenary and member of the mercenary collective "The Iron Path," where she held the instructor class rank of "Dragon." Members in the upper ranks are thought to have undergone extensive training and mastered a number of the fundamental truths of combat, which they then pass on to disciples of their choosing. Her speciality lay in one-on-one AC combat. Kiyohime's Armored Core, or mech, Sotei II, is a tetrapod type focused on mid- to long-range combat.