Kurama (Nine-Tails): The Nine-Tailed Fox of Naruto
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1585 words | Reading time: 8 min
Tailed Beast
Mito, Kushina, Naruto: the nine-tailed fox has spanned three generations. Kurama, the Nine-Tails, was born from the chakra of the Ten-Tails shaped by Hagoromo. The article revisits what really happened during the attack on Konoha, his key abilities, including the Tailed Beast Bomb (Bijudama) and the sensing of negative emotions, then the shift from a forced coexistence to a genuine symbiosis with Naruto. Forms, transformations and canon terminology are clarified, including the Boruto: Two Blue Vortex update, up to the manifestation linked to Himawari.
2025 update: incorporating the events of Boruto: Two Blue Vortex.
Origins and Identity
Kurama, better known as the Nine-Tailed Fox, is one of the nine tailed beasts created by Hagoromo Otsutsuki (the Sage of the Six Paths) from the chakra of the Ten-Tails (Jubi). In Japanese he is often referred to as Kyūbi no Yōko (九尾の妖狐), literally "nine-tailed demon fox". Kurama is the proper name of the tailed beast — it is not a translation of "nine llamas".
The Nine-Tailed Fox as a plush: adopt Kurama, the most powerful of the tailed beasts.

The Attack on Konoha: What Really Happened?
During the attack on the Hidden Leaf Village, Obito Uchiha (under the alias "Tobi") extracts Kurama from Kushina, brings him under his control through the Sharingan and hurls him at Konoha. Minato manages to free Kurama using the Contract Seal (契約封印, Keiyaku Fūin), which cancels the forced summoning contract set up by Obito. He ends up sealing Kurama inside his son, Naruto Uzumaki.

Appearance and Key Abilities
- Colossal chakra: immense reserves providing raw power and very high-level techniques.
- Tailed Beast Bomb (Bijudama): an extremely destructive sphere of energy, the signature of the tailed beasts.
- Negative emotion sensing: Kurama (and Naruto in Nine-Tails mode) can feel the malice/hostility around him, a unique sensory ability.
- Regeneration / endurance: as a chakra entity, Kurama takes hits and recovers exceptionally well, and the jinchuriki benefits from accelerated healing.

Naruto & Kurama: From Forced Coexistence to Symbiosis
Their relationship begins in mistrust, then changes when Naruto chooses empathy over domination. Kurama recognizes Naruto's determination and cooperates: this is the emotional heart of the work. Naruto did not, however, win that cooperation on his own: he had the invaluable help of Killer Bee and the encouragement of Kushina during his inner battle against the Nine-Tails.

Forms and Transformations (Canon Terminology)
- Nine-Tails Chakra Mode (KCM)
- Golden chakra cloak that synchronizes Naruto's chakra with Kurama's for a massive boost in speed, power and perception.
- Tailed Beast Mode (Bijū Mode)
- Manifestation of Kurama's avatar in chakra, up to the full transformation into a nine-tailed fox controlled by Naruto.
- Baryon Mode
- A "combustion" fusion of the chakras of Naruto and Kurama, multiplying the power tenfold but consuming Kurama's life. Used against Isshiki Otsutsuki.

Narrative Impact
Kurama is a major plot engine: he explains Naruto's isolation, catalyzes his quest for recognition and embodies the theme of self-acceptance (taming one's dark side).
Kurama in Boruto: Disappearance… Then Return
In Boruto: Naruto Next Generations, Kurama disappears after the use of Baryon Mode against Isshiki (anime ep. 218 / manga ch. 55).
Latest development (2024–2025): in the Two Blue Vortex arc, we learn of Kurama's return through Himawari Uzumaki, where the tailed beast manifests and cooperates with her.
This arc, marked by the supposed sacrifice of the Baryon Mode, has also revived the speculation about Naruto's death.

Related Techniques (Selection)
- Tailed Beast Bomb and variants combined with the Rasengan/Rasenshuriken used by Naruto.
- Chakra arms and extensions for close combat and protection.
- Negative emotion perception (a unique hostility sensor).
Note: I avoid non-canon or poorly attested names ("Kurama shadow clone", etc.).

Why Kurama Remains Unforgettable
Kurama embodies redemption, friendship and the strength born of mutual acceptance. His arc — from antagonist to partner — makes him one of the most memorable figures in Naruto, and his influence lives on in Boruto.
Summary Table
| Element | Details |
|---|---|
| Name | Kurama (aka Kyūbi / Nine-Tails) |
| Nature | Tailed Beast (Bijū), created from the chakra of the Ten-Tails by Hagoromo |
| Key abilities | Tailed Beast Bomb, colossal chakra, regeneration, Negative Emotion Sensing |
| Notable hosts | Mito Uzumaki → Kushina Uzumaki → Naruto Uzumaki → recent manifestation through Himawari Uzumaki (Two Blue Vortex) |
| Forms | KCM, Bijū Mode, Baryon Mode (cost: Kurama's disappearance) |
| Key event | Attack on Konoha orchestrated by Obito; the Contract Seal used by Minato |
| Status (2025) | Kurama is no longer with Naruto; reappearance through Himawari (cooperation ongoing) |
| Themes | Self-acceptance, redemption, the host–tailed beast bond |
| Terminology | "Kyūbi no Yōko" = nine-tailed demon fox (nothing to do with "llamas") |
FAQ
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Kyūbi = Kurama?— Kyūbi describes the species/form ("nine-tailed fox"). Kurama is the proper name of the tailed beast.
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Is Kurama "dead" after Baryon Mode?— His chakra was consumed, causing his disappearance from Naruto. It is not a classic "biological death".
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Does Naruto become a jinchuriki again in 2025?— No. The current manifestation of Kurama happens through Himawari in Two Blue Vortex.
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How did Minato break Obito's control?— With the Contract Seal, which cancels the forced summoning contract.
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Difference between KCM and Bijū Mode?— KCM = chakra cloak, sensory/speed boost. Bijū Mode = Kurama's avatar materialized (up to the full form).
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Can Kurama sense negative emotions at long range?— Yes, it is a rare sensory trait , useful for detecting hostility.
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Are the "Kurama techniques" like named clones canon?— Caution: avoid names that are not officially attested.
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