Episode 173

The End of Mōryōmaru is the 6th episode of InuYasha: The Final Act.

Summary
The time for the battle between Evil and Evil has come!

Having spent all his time strengthening Moryomaru to make him the perfect armor, the Infant faces off with Naraku to kill him and take his Shikon Jewel Shards for himself. However, the Infant's overconfidence may prove to be his own undoing, and who knows what tricks Naraku has up his sleeve.

Plot
InuYasha and company arrive at a tree outside a village, having been told it's a demon/human-eating demon that had been sealed long ago. However, when new buds started appearing on the demon's branches, they asked a monk for help, only for the demon to swallow him; they've been too scared to go near it since. Wondering what could have caused it to come back to life, Kagome notices Naraku placed a Shikon shard in it. Inuyasha doesn't care, decided to fell the demon with the Wind Scar; however, the attack is blocked by Naraku. The tree comes to life, saying that it hasn't had demon in a long time; it pierces Naraku's barrier. Naraku up roots the demon and absorbs it. He escapes.

Meanwhile, Kōga is trying to track down Mōryōmaru but instead runs into Kikyō and Kohaku. Kikyō wants Kōga to give up his shards so that she can go through with her plan, and she points out how the shards in his leg haven't been obeying him lately. Kōga, however, refuses to give them up and continues after Mōryōmaru. Kikyo only laments that she was unable to prevent an unneccasary loss.

At around the same time, Moryomaru and Naraku run into each other, with the end result being a miasma so powerful,. it kills all life in their immediate area. Naraku says he knew Moryomaru would come for the Shikon Shards in his possession; Moryomaru says that Naraku only has him beat with the amount of shards he has. Moryomaru reduces Naraku to pieces. Naraku says it's useless as his heart exists in Moryomaru; Moryomaru retorts he cannot be killed for the same reason. Naraku reveals he purposely expelled his heart in the from of an infant, knowing it would eventualy betray him. Also forseen, the Infant created a fortress to hide in, Moryomaru; Naraku congradualtes the Infant on fattening up his fortress, something Naraku looks forward to eating. Naraku takes a multi-imbed form to try breaking into Moryomaru; however, Moryomaru once more reduces him to shreds. Naraku tries smoothing Moryomaru, only for Moryomaru to swallow him instead, fusing his shards with Naraku's.

With most of the Shikon Jewel now in his possession, Mōryōmaru's next goal is to go after the remaining shards, and, watching from nearby, Kagome realizes that this means the ones possessed by Kohaku and Kōga.

As Kohaku and Kōga are both nearby, Moryomaru targets Koga first; hoping to test out his new powers. Inuyasha attempts to use the dragon-scaled Tessaiga, but finds that the Infant's Fuyoheki is preventing Moryomaru's demon vortex from being seen. Koga and Inuyasha attempt breaking the armored shell, but don't have any luck. Both end up caught in Moryomaru's tentacles. Inuyasha uses the Tessaiga to absorb the Goraishi's demonic energy, giving him the strength to piece the part of Moryomaru that is absorbing Koga; the Infant is also in this part. Realising that he's in danger, the Infant releases a miasma and has Moryomaru fly away. Kagome notices that Moryomaru hasn't absorbed the Shikon Jewel yet, something that perplexes her.

The Infant is furious; his armor should be completely invicible thanks to absorbing Naraku and the Shikon Jewel, so why hasn't the jewel's magic been helping him. Naraku's face appears before the Infant, saying he was foolish for not noticing that Moryomaru was being eaten from the inside. Outside Moryomaru, Koga awakens, only to angered that his legs are still frozen. Naraku attempts touching the Infant's barrier, only for his hand to be repelled; the Infant taunts him, saying that even if Moryomaru is eaten, Naraku will never be able to break his barrier. However, Naraku uses Yomeiju's tendrils to break through the barrier, forcing the Infant to attempt fleeing Moryomaru. However, Naraku prevents his escape. The Infant says he's willing to die if it meant killing Naraku as well, willing to choose death over re-absorbtion. Having absorbed Moryomaru's insides, Naraku destroys the haku puppet's out shell, revealing himself with the Infant held captive with barrier-piercing vines and Koga still trapped in the diamonds.

Kagome fires an arrow that purifies Naraku's demonic aura, allowing the spirits of the wolf demon tribe to assist Koga by defying Midoriko's will. Koga sees the Infant inside Naraku, and uses the Gorashi on its barrier, freeing himself and exposing the Infant. Naraku prepares to flee by sending out miasma, but Miroku opens his Wind Tunnel in an attempt to suck in Naraku to save Kohaku for Sango's sake.

Unfortunately, this means Miroku also sucks up tons of Naraku's miasma, putting his own life in danger; he begins to bleed from his eyes and mouth while the Wind Tunnel releases an electrical discharge. The Wind Tunnel's pull almost dislodges the Infant, making him lose grip of the Fuyoheki and it gets sucked in. InuYasha closes the Wind Tunnel before Naraku himself can get sucked in. Naraku taunts Inuyasha for doing so as he almost got sucked in; he then flees with his recovered heart. Kikyo examines Miroku, seeing that Naraku's miasma has left Miroku with wounds leading from his Wind Tunnel almost to his heart; the wounds appear similar to spider legs. Kikyo says she will attempt to purify Miroku, but warns that any body that takes in that much miasma will never be fully restored.

Trivia

 * This episode also marks the death of the Infant; reabsorbtion into Naraku eliminates his individuality.
 * Also the Fuyoheki is destroyed; Miroku managed to suck it into the Wind Tunnel.
 * The Wind Tunnel sent out what appears to be an electrical discharge, from sucking in Naraku's miasma.
 * This marks the last appearance of Naraku's post-Mount Hakurei look.