Attacked by Koga and Inuyasha at once, Moryomaru finds himself hard-pressed to defend himself.; Inuyasha is confronted by a massive demon claiming to have slain the Holy Demon Spirit; Inuyasha tumbles to the fact that his true foe isn't the one he's facing.; Inuyasha learns the true nature of Tetsusaiga.; A member of a separate wolf demon tribe attacks Koga for his Shikon shards in order to rescue the wolf demon's little brother.; Byakuya's appearance reveals that Kai was sent after Koga's shards to seize them for Naraku.; Koga and Kai's pursuit of the captive Shinta leads them into a confrontation with Moryomaru.; In the midst of his battle with Moryomaru, Midoriko paralyzes the shards in Koga's legs, leaving him unable to move them.; Using the nulling stone, Akago conceals Moryomaru's demon vortex before Inuyasha can cleave it.; Tetsusaiga manages to penetrate Moryomaru's armor and threaten Akago's very existence.