Perfect Crystal

Perfect Crystal, of unknown origin, was one of the most powerful materials ever discovered. A piece of perfect crystal existed simultaneously in every Spirit Realm, so weapons made from it could harm creatures from any Realm. Only two items made from this substance were known to exist in Ningen-do, the Katana of Perfect Crystal, and the Passage Seeker, a small rod in the shape of an arrow. Fortunes & Winds, p. 29
Category:Nemuranai