A Guardian Spirit Beast (
In the age of rival warlords, Kakin was a small country threatened to be absorbed by its neighboring countries. Around that time, according to ancient manuscripts, the first king of Kakin conjured the Seed Urn inspired by "worm toxin" and had his children fight in a succession contest for the throne, which is the foundation for Kakin becoming the superpower that it is today.
The Seed Urn
The Seed Urn Ceremony
The Seed Urn Ceremony (
Born from the deceased king's strong desire of perpetuation for his descendants, a Guardian Spirit Beast is a parasitic-type Nen beast that possesses a person related to the deceased, feeding on their aura as an energy source and taking a shape and an ability which are influenced by its host's character and disposition. The more unsavory the prince's characters are, the more disgusting, obscene and threatening-looking their beast is. Since the Nen beast is not a direct creation of its host, it cannot be controlled at will. It is imbued with two primary instinctual rules:
- Guardian Spirit Beasts do not fight and kill one another.
- Guardian Spirit Beasts do not attack another human whom a Guardian Spirit Beast is protecting.
A Guardian Spirit Beast will instinctually protect its host but there is no guarantee for it to be its highest priority. A Guardian Spirit Beast is free to leave the presence of its host. It is also aware of any Nen users that are able to see it and, if not actively attacking, it simply stares back at them, and some even intimidate them.
Each Guardian Spirit Beast is endowed with its own Nen type, which can differ from its host's. Its abilities, however, are still influenced by the host's personality and possibly also their Nen category.
The host cannot see their own Guardian Spirit Beast, nor are they able to see those of other hosts from the same generation even if they are a Nen user. Balsamilco surmised that there must be a Limitation that prevents the ceremony participants from seeing the Nen beasts, or a condition that must be fulfilled before they can do so. However, a host from a previous generation can see the Guardian Spirit Beasts of the next.
The beasts also seem to react to their respective host's emotion, as Camilla's own started to transform, revealing an ominous looking head after an argument with Benjamin, and Tserriednich's suddenly materialized and stared threateningly at Theta when he expressed his cold fury on her deception regarding Nen training.
According to Kurapika, the invisibility to most of the Nen beasts makes them a low-risk ability, which the hosts compensate for with a large aura expenditure as well as the complex system of Vows and Limitations in place. This leads him to speculate that if a prince managed to pull out of the Succession War, all Guardian Spirit Beasts would disappear. A Guardian Spirit Beast cannot manifest itself while the host is in a state of Zetsu.
Dark Continent Expedition arc
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Succession Contest arc
Guardian Spirit Beasts
Nasubi Hui Guo Rou's Guardian Spirit Beast
King Nasubi's Guardian Spirit Beast is a huge creature composed of two lateral sections with five limbs in each, which are long insect arms ending in human hands. It has a head in the central part of its body that resembles a human which has an elongated shape, long hair and two enormous ears. Its mouth is upright starting from the height of the eyes to the chin leaving a long tongue out. However, the most notorious part of its body are the bumps that completely cover the rest, those that resemble woman's breasts.
Benjamin Hui Guo Rou's Guardian Spirit Beast
Benjamin's Guardian Spirit Beast is a humanoid creature similar to a large beetle. On its head can be distinguished a phallic shape on the top, two mouths, one much bigger with enormous teeth that seem to be grinding, and another smaller at the height of the neck, that simulates a smile; two barbed ears, and two lobes that separate the top of his head and which would apparently contain insect eyes. It has beetle wings and two clawed arms, a human trunk and abdomen, and its legs are irregularly huge and quite muscular that also end in claws.
Camilla Hui Guo Rou's Guardian Spirit Beast
Camilla's Guardian Spirit Beast has the form of an actirian or sea anemone of great size. It could also be a kind of jellyfish. It has a cylindrical shape, in which the upper part is comprised of several tentacles with sunken tips that protrude outwards, as if they were the branches of a tree. The lower part of its body extends like a great mantle and ends up forming a kind of skirt.
It is a Manipulator with a coercive-type ability that gives Camilla complete control over a target once certain conditions have been met.
Zhang Lei Hui Guo Rou's Guardian Spirit beast
Zhang Lei's Guardian Spirit Beast is shaped like a big dharmachakra (☸) with a dark flame covering its rim. It has inscription-like patterns on its inner part, and has narrow eyes and mouth. Eight crosses spread around its body in a clockwise manner and a single cross with a circle around it on its forehead.
This Guardian Spirit Beast is a Conjurer with the compound type ability to produce a coin from its mouth every day. The owner of a coin will gain various abilities after fulfilling certain conditions.
Tserriednich Hui Guo Rou's Guardian Spirit Beast
Tserriednich's Guardian Spirit Beast resembles a horse with feminine feature with long fair hair, a long neck with a mane that can extend several meters, big four fingered hands, big sharp pointed nipples, a tail resembling a nine tailed whip, and it wears high heel shoes. The inside of the beasts mouth reveals another face within, with a split tongue and jagged teeth.
Tubeppa Hui Guo Rou's Guardian Spirit Beast
Tubeppa's Guardian Spirit Beast resembles a giant toad or chameleon with spiked axle wheels for legs and has many pole like horns on it's back.
It is a Transmuter with the ability to concoct chemicals with all manners of effects inside its body. As a coexisting-type ability, however, it requires a "partner".
Tyson Hui Guo Rou's Guardian Spirit Beast
Tyson is guarded by the Squinty Eye-Ball and multiple Guardian Spirit Beasts of the same appearance. They are small sized mono eyes creatures with a slender body and limbs, as well as a round caudal fin. The Nen creatures are all spawned from a currently unseen creature that hovers above Tyson.
It is an Emitter with a diffusive levy type ability. Through one-eyed, lizard-like Nen beasts that attach themselves to whoever listens to Tyson's teachings, it collects aura and bestows happiness in return. As the amount of happiness grows, so does the target's dedication for Tyson's doctrine. If its only taboo is broken, harsh punishment is dealt.
Luzurus Hui Guo Rou's Guardian Spirit Beast
Luzurus' Guardian Spirit Beast looks like a big, sinister centipede with crooked, jagged teeth, big wide black eyes, small wing like extensions, antennae on either side of its head and a pincer at the end of its tail.
It is a Conjurer that makes use of pseudo-coercive Manipulation. It has the ability to set traps by materializing whatever the target desires as bait. When the target satiates their desire, the trap is sprung and the ability activated.
Salé-salé Hui Guo Rou's Guardian Spirit Beast
Salé-salé's Guardian Spirit Beast is shaped like a confetti ball with multiple mouths on its body. The mouths are seen emitting an unknown substance. Its surrounded by multiple ball like creatures with blister-like lumps.
While its abilities are currently unconfirmed, one of First Prince Benjamin's Royal Guards assigned to Salé-salé speculates that the Nen beast is a Manipulator that may be capable of controlling many targets via the periodic secretion of a white smokey substance that varies depending on the prince's status and state of mind. He hypothesizes that this control mechanism works via the use of suggestions. The guard also notices that the beast is capable of cloning itself onto nearby humans, those clones also possess that same viral-like replication pattern as the original Nen beast, and cause people who spend enough time around them to also gain a clone of the Nen beast.
Whomever has spent a certain amount of time with the prince and cannot see the beast nor cannot take up defense measures against inhaling the smokey substance (such as blowing it away when it gets close to your face), seems to acquire this clone.
Halkenburg Hui Guo Rou's Guardian Spirit Beast
Halkenburg's Guardian Spirit Beast resembles a giant gargoyle with one big eye, four nostrils (two on each side of its face), with a giant scowl on its face. Its body is covered in shaggy fur, while two horns are mounted just above its head. It has three claw-like fingers and toes, and what appears to be an exposed hole on its back.
It is an Enhancer that is also capable of soliciting Manipulation. After knocking them out, it imprinted a pinion on the back of Halkenburg bodyguards' left hand. Their memories of being rendered unconscious were rewritten to prevent them from panicking. The more people are imprinted with the mark, and the more of them gather around Halkenburg all with the same will, the more their aura output grows, reaching levels that surpass all Nen abilities.
Kacho Hui Guo Rou's Guardian Spirit Beast
Kacho's Guardian Spirit Beast is currently unknown.
Fugetsu Hui Guo Rou's Guardian Spirit Beast
Fugetsu's Guardian Spirit Beast manifests as a small, ornate door identical to the entrance of a playground, named "Magic Worm", she and Kacho used to play in as kids.
In its only activation, the door was visible to Fugetsu herself, and it allowed her to emerge in her twin's bedroom after crawling through a tunnel.
Momoze Hui Guo Rou's Guardian Spirit Beast
Momoze's Guardian Spirit Beast is shaped like a human size hamster-like creature. It has two eyes stacked on top of one another on its forehead, two circular ears, a heart-shaped symbol on its belly, and a rat tail.
The mouse inquires a target of its choice whether they are free or not and when the target responds yes, the Nen beast uses semi-coercive Manipulation on them to make them kill people in the surrounding area.
Marayam Hui Guo Rou's Guardian Spirit Beast
Marayam's Guardian Spirit Beast resembles a Chinese dragon, with three paired horns on its head, pelvic fins on each lower side of its body, and a pointy caudal fin for a tail. Hanzo and Biscuit note that its size grows at an abnormal rate and that its appearance reflects the prince's state of mind.
It is suspected to be the creator of the barrier around Room 1013, preventing anyone outside of it from walking in, instead teleporting them to an empty version of the prince's quarters.
Woble Hui Guo Rou's Guardian Spirit Beast
Woble's Guardian Spirit Beast is currently unknown.
- Kodoku (蠱毒, "Worm Toxin") is a type of Japanese poisonous magic, derivative of the Chinese Gu (traditional Chinese: 蠱; pinyin: gǔ; Wade–Giles: ku) magic. To create it, several poisonous insects are closed together inside a jar, which is opened when only one of them remains. The surviving insect is said to have absorbed the poison of all the other insects. Why the Seed Urn would be inspired by this type of magic is evident: the similarities do not stop at the ritual through which the members of the Kakin Empire Royal Family obtain a Guardian Spirit Beast, but extend to the whole Succession War: the siblings are in fact forced to stay on a ship journeying to the Dark Continent while they attempt to kill each other, with the only survivor becoming the legitimate heir to the throne.
- In Togashi's manga YuYu Hakusho, an egg is given to new Spirit Detectives. After a while, a Spirit Beast will hatch from it, with its appearance, personality and powers resembling those of the one who keeps it. The whole process is very similar to the Seed Urn Ceremony through which Nasubi and his children obtained their Nen beasts.
- When asked to place his hand in the mouth of the Seed Urn, Tserriednich worried it might be bitten off: this may be a reference to "La Bocca della Verità" ("The Mouth of Truth"). Starting from the Middle Ages, it was believed that if one told a lie while his hand was in the mouth of the sculpture, it would be bitten off.