InuYasha: The Final Act - Season 1 (2009)

The swordsmith Toshu forged a demon-blade using one of Ryujin's scales, and the Dakki was born. Every time Inuyasha tries to attack, he is undermined by demonic energy.

The Tetsusaiga has attained the power of the dragon scales. In order to be able to quickly use the demonic power well, Inuyasha has no choice but to go through training.

Inuyasha and Koga arrive at the scene of Moryomaru and Naraku's fight. But Moryomaru, who wants his Shikon shards, catches Koga.

Kikyo has been contaminated by Naraku's spider web. In order to save her, Inuyasha and Kagome need the bowstring kept in Mount Azusa's mausoleum.

Kikyo tries to purify Naraku and his Shikon shards. She also tries to purify Midoriko's will that controls the shards in Koga's legs.

Sesshomaru asks his mother how he can expand Tenseiga's Meido, the Path to the Underworld. In response, his mother uses the Meido stone that Sesshomaru's father gave her.

The Flower Prince is a demon that feasts on saddened or anguished hearts. Dazzled by the flower's fragrance, Inuyasha is entangled in a fake dream.

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.

In order to defeat the demons, Sango coats Hiraikotsu with poison. To cleanse it of the poison, the Master of Potions says she must defeat the demon inside the jug.

Shishinki, the Ogre of Death, appears before Sesshomaru, telling him that Inuyasha and Sesshomaru's father stole his Meido Zangetsuha in a battle. Shishinki says that Tenseiga is an incomplete sword that is merely a cast-off piece of Tetsusaiga, and that Sesshomaru will never be able to perfect Meido Zangetsuha. Then, a secret involving Inuyasha's Tetsusaiga is revealed!

Sesshomaru is enraged when he learns the secret behind Tenseiga. Totosai tries to persuade Sesshomaru that he will surpass his father once he is able to abandon his attachment to the sword as well as his hatred of Inuyasha. Meanwhile, Naraku relentlessly chases after Kohaku's Shikon shard and learns that Kikyo left behind something worth fearing.

Sesshomaru steals Tetsusaiga's power with Tenseiga, empowered by Kanna's memento, a fragment of the Mirror Demon.

The priestess Hitomiko lost her life at Naraku's hands. But she comes back to life and locks Kagome within a barrier.

Inuyasha and Kaede try to find out what is sealing off Kagome's powers.

Kohaku remains unconscious after being stared down by Magatsuhi, the evil will. Kagome is worried, but she has to buckle down and study for her entrance exams...

Sesshomaru chases after the evil will, Magatsuhi. But it's only part of a trap set up by Byakuya of the Dreams.

Naraku is after the last Shikon shard, and he takes Kagome hostage.

Kagome graduates from middle school and returns to the feudal era. Shippo and Kohaku stay at Kaede's village, while the rest of the gang heads out to battle Naraku.

Inuyasha's heart is devoured by the Shikon Jewel's poison, and he turns into his demon form. He hurts Kagome, and the darkness in his heart takes control of him.

Kagome's spiritual powers are restored, and divine light is revived in Naraku's Shikon Jewel. However, Naraku uses this as a decoy to lure Sango into his trap.

Naraku has been living as a demon despite having a human heart. While fighting him, Kagome asks about his true wish.

Naraku heads for the Bone Eater's Well and vanishes! Before disappearing, Naraku makes his last wish for Kagome, injured at the hands of Byakuya, to be swallowed into Meido, the Path to the Underworld.

When the last person to obtain the Shikon Jewel makes the one correct wish, the jewel will be purified and disappear entirely from this world.