To unsheathe the sword, mononoke's Form (形/katachi - name, shape, physical appearance), Truth (真/makoto - state of being) and Regret (理/kotowari - state of mind) must be known.
Two different swords of exorcism have been shown: The one held by the Kusuriuri in Mononoke and Ayakashi is red and gold with many round embedded jewels. The pommel is a goblin-like head with facial hair. When drawn it has an orange and purple energy blade. Its name is Ri. The one held by the Kusuriuri in Gekijouban Mononoke is yellow with a design of purple scales along the grip. The pommel is a dragon-like head with sharp fangs. When drawn it has a black and yellow energy blade. Its name is Kon.
