Totosai takes on the task of repairing the Tetsusaiga, which was broken during the battle with Goshinki. Meanwhile, Sesshomaru takes Goshinki's fang and gives it to Kaijinbo, a swordsmith demon. Using the fang, Kaijinbo forges a cursed sword called Tokijin. Controlled by the sword's hatred, Kaijinbo attacks Inuyasha. On the night of the new moon, Inuyasha loses his demon powers and becomes human, forcing Miroku to fight and stop the crazed swordsman…

Badly wounded, Inuyasha is summoned by Kikyo using Soul Collectors. She tells him not to die until she destroys Naraku along with the Shikon Jewel. Later, Inuyasha rejoins Kagome and the others, but Kagome is upset after seeing him protect Kikyo. Meanwhile, Naraku sends his third incarnation, Goshinki, after them as a deadly new assassin…

After failing to absorb Kagome's soul, Kanna retreats at Kagura's call. Inuyasha attacks Kagura with the Wind Scar, but the blast is reflected back by Kanna's mirror, resulting in a devastating counterattack. Then Naraku appears, revealing that both Kagura and Kanna were born from him, and that Kikyo gave him the Shikon Jewel shard she stole from Kagome…

Miroku reunites with a girl he once courted, Koharu, and decides to leave her in the care of a certain village. However, Kanna, the demon and older sister of Kagura, appears there and steals Koharu's soul using a mirror that absorbs souls. The other villagers who also had their souls stolen are manipulated into attacking Inuyasha and the others. Realizing that this is Naraku's trap due to the presence of Gatenmaru, the group struggles, unable to harm the possessed villagers…

Koga, poisoned by the fake shards, weakens. Kagura arrives and manipulates the battlefield winds to turn the tide. But Kagome purifies Kagura's aura with an arrow, revealing the space where Inuyasha unleashes the Wind Scar...

Wolf demons lured by rumors of the Shikon Jewel are slaughtered—by Naraku's new servant, the wind sorceress Kagura. She uses their reanimated bodies to attack Inuyasha and lures Koga into a trap. Koga, believing Inuyasha is behind the killings, enters the fight—unaware Naraku has implanted him with fake shards...

Jealous of Kagome's bond with Koga, Inuyasha angers her—and she returns to the modern era. Her friends encourage her classmate Hōjō, who has a crush on her. Meanwhile, Inuyasha lingers nearby but hesitates to bring her back...

During a fight with the Bird of Paradise, Kagome tells Koga that the jewel shards are in their enemies' mouths. Koga engages them but loses his own shards in battle. Inuyasha arrives, defeats one of the birds, and confirms Kagome's safety...

Koga, a brash wolf demon with Shikon shards in his limbs, challenges Inuyasha. After a quick retreat, he returns—interested in Kagome's spiritual power—and kidnaps her. Inuyasha gives chase but is attacked by their natural enemy: the deadly Bird of Paradise...

Blinded by Sesshomaru's poison, Inuyasha learns to sense demonic auras and masters Tetsusaiga's ultimate technique—the "Wind Scar." Defeated, Sesshomaru retreats, and Tōtōsai recognizes Inuyasha as the blade's true wielder. Meanwhile, a human girl named Rin finds the wounded Sesshomaru...

The legendary swordsmith Tōtōsai forges two mystical blades: Tetsusaiga for Inuyasha, and Tenseiga, a healing sword, for Sesshomaru. Displeased with a sword that can't kill, Sesshomaru demands another. Tōtōsai runs—and tells Inuyasha that he must face Sesshomaru again...

Targeted by illusions, Kagome resists their effects but is betrayed by Kikyo, who steals her Shikon shards and nearly kills her. Inuyasha breaks the spell in time to save her—but Kikyo escapes and takes the shards straight to Naraku...

In a cave filled with cursed energy, Inuyasha and Miroku find a grotesque amalgamation of demons—created through a deadly ritual. Inuyasha battles to protect Kagome, but killing the creature risks absorbing it. Suddenly, Kikyo appears, purifying the evil with a sacred arrow...

Seeking medicine for the poisoned Kirara, Inuyasha and Kagome meet Jinenji, a gentle half-demon tormented by villagers. But when a man-eating youkai threatens the village, Jinenji bravely fights back—and the villagers begin to accept him...

Sango steals Tetsusaiga and heads to Naraku's castle, intending to kill him—but is critically injured by Kohaku. Inuyasha and the others arrive but are nearly overwhelmed by Naraku's miasma. Kagome senses his Shikon shards and fires a sacred arrow, shattering his form...

Kohaku, believed dead, is alive—sustained by a Shikon shard embedded in his back. Naraku uses this to blackmail Sango: steal Tetsusaiga or Kohaku dies. Torn by guilt, Sango stares at the sword as Inuyasha sleeps...

After his Wind Tunnel is injured, Miroku seeks aid from his guardian, Monk Mushin. But Mushin, possessed by a demon, paralyzes and attacks him. Surrounded by enemies, Miroku erects a barrier but weakens. Inuyasha rushes in but struggles—forcing Miroku to use the forbidden Wind Tunnel...