InuYasha The Final Act Episode 11 Kanna's Gravestone ( Air Date 2009-12-13 ) Genre Animation, Sci-Fi & Fantasy, Action & Adventure, Comedy, Mystery category. Overview "The Mirror Demon steals Tetsusaiga's demonic energy. Inuyasha counterattacks despite enduring some fierce blows, but all of his attacks aimed at the Mirror Demon end up being taken by Kanna.".