Kanna

is the first detachment of Naraku. She appears to be a ten-year-old girl with pure white hair with white clothing. As a "concealed incarnation" of Naraku, Kanna has no scent and no demonic aura, making her undetectable to InuYasha's senses and is also immune to demonic aura-related effects such as the Hakurei-zan barrier. Kanna is the only incarnation that Naraku trusts with important information about his actions, allowing her to give orders in his place. Even though she is a void, she still has her own emotion of sadness that she cannot express.

Powers and Abilities
Kanna carries a mirror that can steal the souls of those reflected in it. Once a soul is trapped by her mirror, Kanna can control that person's body to carry out her bidding. However, the mirror can be overwhelmed by an especially powerful soul such as Kagome's. It can't steal souls from those who wear powerful items such as the Celestial Robe. The mirror can also create a glass demon to copy the abilities of whatever it reflects, though Kanna herself suffers damage when the glass demon is wounded. Also when Kanna has summoned the glass monster she can create a shadow of her mirror to shoot rays of light at to her opponent. She can even disappear and reappear at will indicating she also has Naraku's ability to teleport.

Because Kanna is a nihility demon, she possesses no scent or jaki (demonic aura), making it impossible to detect her without actually seeing her. Naraku takes advantage of this by using her as a spy and sending her on secret errands. Another benefit of this property is that she is completely, or nearly completely, unaffected by spiritual powers. During the Shichinintai arc, she was able to wander freely inside of St. Hakushin's purifying barrier while Naraku, Kagura and Naraku's minions were confined to Mt. Hakurei's interior.

Biography
In the manga, Kanna first appears in volume 15, scroll 8 "The Mystery of the Wind Witch", page 152. There, Naraku tells Kagura "I have already sent your elder sister ... Kanna." Then Kanna is seen walking with her mirror and some Saimyōshō towards a village, where she will steal the souls of the inhabitants and turn them against InuYasha and his friends. She is also tasked to take the Shikon Fragment from Kagome but unable to do so when her mirror was nearly destroyed with Kagome overwheming soul. When Kagome fires one of her arrow in to the mirror she is forced to release the villagers' and Sango's souls or risk its destruction. She disappeared along with Naraku and Kagura.

The Dark Priestess Tsubaki
After her appearance she uses her mirror to spy on various things for Naraku while Kagura does the work of recruiting dark priestess Tsubaki to their side with the prize of Shikon fragment.

Shichinintai Arc
After Inuyasha was able to destroy Naraku barrier he retreated to Hakurei Mountain. But not before ressurected the Band of Seven and recruit the living priest Hakushin to add an additional reinforcement. With Hakushin, Naraku created the sacred barrier to mask himself within the mountain, and expell his heart and Onigumo's side out of him to become invincible. Since Hakushin's holy barrier prevented Naraku, Kagura and all other demons inside the mountain from leaving, Kanna (having no demonic aura) is used along with Kohaku to give Naraku's orders to the Band of Seven. She also told Bankotsu how to make his weapon stronger by imbedding the Shikon fragment in its blade.

During the time that Inuyasha battles with Jakotsu in the middle of the mountain, Kanna informed Kagura that Miroku and Sango had entered the mountain and were trying to find Naraku. Later, after Naraku's new body was formed, Kagura takes the infant to safety, while Kanna remained with Naraku until he successfully expelled Onigumo's Heart.

Akago Arc
Kanna next task is to use tainted Shikon Shard to control Kagome at the mountainside temple, a scheme that is once used by Tsubaki, Kagome, however still maintained her heart and rejected the shard. She escaped along with the baby and Kagura on Kagura's feather.

When the baby was cut in half, Kanna take one of the half that regenerate into the same baby and told Kagura to take the one that will regrow into Hakudoushi.

After the attack of Princess Abi at the castle, Naraku knew that he cannot keep his heart there anymore. So he ordered Kohaku to slay every inhabitants and Kanna to suck out their souls to prevent Inuyasha group from finding any information on where they went to. She met Kikyo on an unnamed mountain area and jump down the cliff with Moryomaru protectine her, the baby was later given to Moryomaru, who was killed and absorbed by Goryomaru per Naraku command. She later resufaced to take the baby and retreated along with Hakudoshi. While the rest of her siblings chose to betray Naraku, she was the one who remained loyal to him. She felt sorry for Kagura because she had no real freedom. After Hakudoshi's and Kagura's death and Byakuya's creation, she was ordered by Naraku to pretend to help Moryomaru. Naraku knew Akago couldn't read her mind due to that he thought she doesn't have heart (Which is later proven not true). As more and more of her siblings died, she started carrying more sadness in her heart.

In episode 178 she went to the the flower field Kagura died in, finding her fan. It was at this point that Kanna started to question herself about whether Kagura got the freedom she wished for and realized that she herself had nothing.

Kanna's End
"Fools. Do they pity Kanna? But Kanna cannot feel a thing, be it pain, fear or sorrow. She cannot even understand the reason for your pity." — Naraku

It becomes clear that she was fated to die by Naraku when she finally started to express her emotions (he reveals that her only purpose for existence is to destroy Inuyasha's group). In chapter 478 of InuYasha (Kanna's Gravestone), Kanna becomes more dangerous than anyone expected. She battles the group using a glass demon that came from her mirror. The glass demon copies the power of Tessaiga, robbing it of nearly all of its powers, including the Kaze no Kizu, Crimson Tessaiga, the Dragon-Scale power, and the Kongosōha, leaving the real Tessaiga nothing more than an apparent shell. It also appears that if the glass demon is hurt, the injuries are inflicted on Kanna since a black mark appeared on her neck after Kagome's arrow struck the glass demon in the same place with no apparent effect on it, and the same thing occurred when InuYasha struck the glass demon's left shoulder, which turns the demon into a fighting voodoo doll.



When the group finds Kanna, she fires a ray of light from the sky down at InuYasha. He reflects it with Tessaiga back at the glass demon. Kanna continues to receive damage to herself and the Tessaiga cracks from all of the light blasts. Kagome deduces that Kanna was ordered by Naraku to sacrifice her life in order to break Tessaiga.&nbsp Because she continued to take most of the mirror demon's damage, Kanna indirectly loses her left hand and right arm during the battle. In chapter 480, she was forced to die at Naraku's command, by shattering herself and the glass demon into hundreds of shards.(In the anime, he destroys her heart.) A shard manages to hit Kagome's right eye and through the shard, Kanna communicates to her the secret to defeating Naraku.

Other than that, Kanna has never shown signs of betrayal to Naraku and was his most loyal, trustworthy detachment (besides Byakuya). In the anime though, it start to appeared sometime during the time Kagura left.

Although Naraku had commented upon Kanna's death that she had no thoughts and feelings; it was assumed that she did not care about either living or dying. However, after Kanna had communicated with Kagome just prior to her death, Kagome stated Kanna did not want to die and had feelings of her own. Kagome continues her wish to defeat Naraku and finally allows Kanna to rest in peace.

Kagura
Although never stated, it is possible that Kagura and Kanna are very close, as Kagura never had any ill thoughts about Kanna, (but we do know she had bad thoughts of Goshinki, Muso, The Infant, and especially Hakudoshi.) Kanna and Kagura's possible closeness is supported in the 2nd movie, in that even after Naraku's "death", they remain together as opposed to parting ways after they both have their freedom. It is also possible that Kagura's betrayal and death inspired Kanna to betray Naraku. Kagura's death may have also caused Kanna to question her existence. They are the first two incarnations of Naraku, and both of them live the longest as compared to all the other incarnations of the series, many of which are killed after their first encounters with Inuyasha and his friends.

Kagome
At first, Kagome and Kanna were simple enemies with one trying to destroy another. But as the series progressed and after Kagura died, Kagome became more worried about Kanna. As shown during Kanna's final battle, when Kanna unleashed a mirror shadow on Inuyasha, Kagome warned Kanna about shooting the opening and when she died, Kagome screamed Kanna's name in clear disbelief. And after she died, Kanna spoke her last words to Kagome, telling her about the light that can kill Naraku.

Anime vs. manga
Kanna is given more characteristics in the anime than manga as the reason for her to betray Naraku was because of Kagura. It was revealed that she started to develop her own emotion over time and before she died, she gave a smile because she finally had her own freedom. Also, when Naraku ordered Kanna to walk toward Inuyasha's group to kill them, she instead stood still and refused, proving that she does indeed have her own heart.

Quotes

 * 1) "Your soul is mine."
 * 2) "Her soul...won't be contained."
 * 3) "The longer I endure this world, the more beautiful the midnight moon."
 * 4) "Flowers wither and lose their hue, much as I reflect in vain time lost to the long rain."
 * 5) "Kagura, did you become the wind? Did you win your freedom?"
 * 6) "Kagome...the light...the light will kill Naraku."
 * 7) "As I pass through the lengthy struggle of life in this fleeting world, I cannot help but long for the midnight moon I once saw."
 * 8) "Freedom...?"

Trivia

 * 1) Her Korean voice actor Oh Ju-Yeon also played young Kaede.

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