退魔の剣
[[Sword]] used by [[Kusuriuri_(mononoke)|]] to slay mononoke in the [[Mononoke]] series.

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.
sword of exorcism