Kagome is able to pull out the Tetsusaiga. Sesshomaru tries to kill her, and Inuyasha is angered and fights to protect Kagome. His will to protect a human changes the Tetsusaiga into its true form, a fang sword.

Kagome returns to the shrine in the middle of her date with Hojo. She senses the presence of the Shikon Jewel shards and returns to feudal Japan. Naraku reveals that fifty years ago, Onigumo was in love with Kikyo. The demons that were drawn to Onigumo by his malice devoured Onigumo, and the demon Naraku was born.

Inuyasha and the others stumble across a cave full of demons fighting to the death. They soon discover that Naraku is using to find a new demon to integrate into his being. However, the large demonic aura brings Kikyo into the mess.

Inuyasha and the group must battle the Birds of Paradise, before they can reach the wolf den. Meanwhile, back at the den, Koga expresses his true feelings for Kagome. When the final battle with the Birds ensues, will Inuyasha's jealousy cost Koga his life?

Inuyasha and his companions come upon an orphan named Koharu, a young woman who believes she is in love with Miroku, after he helped her three years ago. When Koharu needs help again, they assist her and find her a home in a new village. When Naraku sends Kagura and Kanna to destroy Inuyasha and his companions, Koharu and the villagers become the new pawns in Naraku's devious plan.

Naraku sends his two new incarnations, Juromaru & Kageromaru, to attack Koga, and also, Inuyasha and his companions. Can Inuyasha and Koga work together as a team to defeat these new foes?

Sesshomaru learns from the wise tree-demon, Boku'seno that when Inuyasha transforms into a demon, his demon blood takes full control turning him into a mindless killing machine. Elsewhere, Inuyasha and the others arrive at a village that is ruthlessly being held under the control of the Moth Demon, Gatenmaru and his band of thieves.

Shippo develops a crush on Satsuki, a girl who hopes to wish her dead brother back to life with a fake Shikon shard.

As Sango is repairing her damaged Hiraikotsu at her home village, she encounters two sisters who ask her to teach all she knows about demon slaying.

Inuyasha and the gang enjoy the hospitality of a village they saved from a centipede demon. However, their stay is interrupted by a string of strange possessions taking hold of the group.

Naraku tries to absorb Muso back into his body.

Inuyasha and Koga separately try to rescue Kagome. Meanwhile, Sesshomaru continues his battle against the panther demons.

Koga must resolve his issues with Ayame, while fighting off the hair demon that is after the jewel shards in his legs.

As Inuyasha's stay with Kagome in the Modern era continues, Inuyasha takes his first trip with Kagome to a grocery store. Along the way back, they spot Sota and discover he has his first crush on a girl in his class.

Inuaysha and the others find a demon using a fake Sacred Jewel and, with the help of a scholar, search to find out how, and why.

A deadly spectre arises in the northeast, driving Ayame and her wolf-youkai tribe from their territories, Koga must step in to avenge his fallen brethren.

Dr. Suikotsu continues to fight Inuyasha.

Koga, Ginta and Hakkaku go to Mt. Hakurei and meet up with some of the seven warriors. Koga fights in a rough battle with them and gets injured. Meanwhile, Jakotsu meets up with Sesshomaru and they fight. Inuyasha, Kagome, Shippo and Kirara are near Mt. Hakurei also, but then, Inuyasha suddenly smells the blood and scent of the wolves and rushes over.

Inuyasha fights for his life against Jakotsu. Kikyo meets Hakushin. What will happen to the sacred barrier after Kikyo intervenes?

Failing to find Kikyo after sent on a wild goose chase by a priest, Inuyasha is unaware that Kagome and the others are in danger. Miroku and Sango have to defend themselves against murderous guards, while Kagome is in danger from Kagura and a strange baby who is trying to control Kagome's heart.

Inuyasha and his group travel to a coastal town where they meet a beautiful woman, who attempts to steal the Tetsusaiga.

Inuyasha and Sesshomaru confront Sara, but Sara has a terrible secret.

Hoshiyomi plans to destroy humanity using the Naginata of Kenkon.

Inuyasha and his friends attempt to reach the graveyard located beyond the border of this world.

Inuyasha and the others are on a mission to find Princess Abi and her nest of birds. However, they must get past Hakudoshi, first.

Naraku appears to steal Hosenki's shard, but Sesshomaru arrives on the scene, to everyone's surprise.

Sango attempts to stop Kohaku and the demon rats, while Hakudoshi tries to subdue Kikyo's Mayose spell, intended to destroy the stampede of rodents.

Naraku confronts Kikyo, while Hakudoshi creates a new monstrosity for Inuyasha and friends to deal with.

Upon healing her wounds inflicted by Naraku, using Midoriko's soul, Kikyo runs into Inuyasha again and reveals the secret to destroying Naraku.

Kikyo attempts to purify Naraku and his Shikon shards along with Midoriko's will that controls the shards in Koga's legs.

The demon Shishinki approaches Sesshomaru for a fight, having been defeated by Sesshomaru's father long ago. To Sesshomaru's surprise, Shishinki attacks him using a complete Meido Zangetsuha and claims Sesshomaru's father stole the technique from him. Sesshomaru attacks with his Meido, but Shishinki's absorbs it.

Inuyasha's group returns to Kaede's village to tell her of Kikyo's death. As they talk, she states that Kagome's power was probably sealed by Magatsuhi, the evil will of the Shikon Jewel that did it out of fear of Kagome's powers.

Inuyasha's group leave to defeat Naraku, leaving Shippo behind. As they find Naraku and Byakuya in a cloud of miasma, they see Sesshomaru enter Naraku's body in search of Rin. As Inuyasha's group enters, Miroku pauses to propose to Sango.

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.