Tenchi Muyo Wiki
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Funaho tree

Funaho, a 1st generation tree

Royal Trees (王立樹, Ouritsuju) are intelligent life forms from the planet, Jurai. Descended from the Chousin Goddess Tsunami, these trees represent one attempt by Tsunami and her sisters to bring about a being far more powerful than they. The Trees of the Imperial Family are also the heart and brain of Juraian ships. Most of the time, the trees are placed inside of the ships after they are grown in the Royal Arboretum on the planet Jurai.


Tsunami is called the “Genesis Tree” as she is the original Royal Tree and obviously the most powerful of the Royal Trees. However, Tsunami is much more than some powerful tree. She is one of the Chousin – the greatest high-level beings from another dimension. Another way to look at her is as a goddess.

After creating the multi-verse (the various dimensions of the universe), Tsunami and her Choushin sisters Washu and Tokimi began to try to prove the existence of a higher-level kami (god) by finding this person. As such, Tsunami descended from her realm into the 3rd dimension along with her sister Washu. She had a giant humanoid form with which she could communicate with the life forms in the 3rd-dimension (it should be noted that even then, Tsunami’s physical features were that of an adult Sasami). It appears that her giant form resided in the 3rd-dimension for over a billion years or more.

Some 150,000-years ago, the giant, sleeping humanoid form of Tsunami was found on the planet of Jurai by Jurai Masaki, who would eventually become its first emperor. Because Tsunami had been asleep for so long, parts of her had begun to turn into a tree. After waking up, Tsunami detected evidence of potential in this man. Tsunami theorized that his descendants would produce the kami the Choushin were looking for.

Thus Tsunami made a pledge to the man of House Masaki to protect him and his descendants. She then turned her giant humanoid body on Jurai into Tenju, the giant semi-intelligent tree that houses the Royal Palace as well as the arboretum of the Royal Trees. At some point, Tsunami created Tsunami-no-ki, the original Royal Tree and placed it within Tenju. Tsunami-no-ki became the interface for Tsunami’s Chousin powers in the 3rd-dimension. Based on what we saw in the OVA spinoff Tenchi Muyo! GXP, where Tsunami had given 1st generation tree seeds to the precursor civilization, it appears that Tsunami-no-ki was in the 3rd-dimension long before Tsunami met the 1st emperor.

Tsunami's Children


Princess Ayeka's Ryu-Oh.

As one might expect, Tsunami-no-ki can produce seeds just like any tree can. Therefore, Tsunami-no-ki’s seeds can be planted to produce powerful offspring trees. Those trees can produce seeds that create less powerful offspring. This process can continue on and on and is how the “generation” system for the Royal Trees is established. Here is how it works:

Tsunami-no-ki is the interface for Tsunami’s Chousin powers and therefore wields power that is unimaginable. Tsunami-no-ki can generate 10 Light Hawk Wings, manifestations of godly power in this dimension and a powerful defense shield which can absorb incredible amounts of energy and render it harmless. Light Hawk Wings can also be used as an offensive weapon, but they weren’t designed that way. Having 10 Light Hawk Wings would make Tsunami-no-ki virtually untouchable by any enemy force. Ten Light Hawk Wings are also the maximum number that can be produced in the 3rd-dimension, without destroying the universe.

Tsunami-no-ki’s offspring are called 1st-generation trees. First generation trees are extremely powerful and very rare. Tsunami did not produce many seeds to become 1st-generation trees. 1st-gen trees can only produce 3 LHW’s, but this is more than enough for their purposes. They draw their power directly from Tsunami-no-ki.

1st-generation tree’s offspring are 2nd-generation trees. Since they draw their power through the 1st-generation trees, they are one-step removed from Tsunami and thus less powerful. 2nd-gen trees can still produce 3 LHW’s, but offensive use requires the override by a 1st generation tree or its master key. Many members of the Juraian Royal Family partner with 2nd-gen trees.

The 3rd-generation trees are the offspring of the 2nd-gen trees and because they are two-steps removed from Tsunami, they are even less powerful. They can only produce 1 LHW when they synchronize with another 3rd-generation tree. Despite being weaker, 3rd-gen trees still have the power to destroy a planet! 3rd-generation tree-ships constitute much of Jurai’s powerful fleet. Members of the Royal Family that are not accepted by a 1st or 2nd generation Royal Tree are partnered with a 3rd generation Royal Tree.

The first three generation of Royal Tree’s are all sentient beings. Thus they have their own will and are not slaves to the Juraians but partners. Starting with the 4th-generation trees, they are not sentient, and thus act as a normal power unit/computer unit. With each succeeding generation, the trees have less power, but still provide an important function. Some of these higher-generation trees are used on Juraian colonies (or with allies of Jurai) as a power source.

All of Tsunami's intelligent offspring have a unique ability of self-preservation. This was seen when Ryu-Oh was destroyed in episode 5, yet a seed from Ryu-Oh retrieved by Tsunami and planted and called Ryu-oh. This from "101 Facts":

Occasionally Royal Trees produce a seed in sap on the trunk. This happens only when Tree regenerates itself. When the Tree dies, this seed germinates by interaction with the 'key'. This special seeds can grow anywhere as long as its kept in the special unit.

The Knights of the Renza Federation

The "Knights" used in The Renza Federation, mecha powered with lower generation royal seeds, were largely produced through a "splicing" technique that creates clones of a seed in a process similar to growing a new plant by cutting part of it from the original. However, unbeknownst to them, this process also strips the ships of their limited consciousness, leaving them powerful, but in a state similar to being lobotomized. The first generation seed powered mecha, Zinv, can sense (and is disturbed by) this damage, and calls them "broken."

Partners for Life

Since 4th-generation trees and beyond are not sentient, these can be used as the Juraians see fit. However, with the first three generations, the tree is the one to choose the partner. The Juraians have no say in the matter when it comes to which tree partners with which person.

Sometimes a tree will send a telepathic call to the Juraian whom it has chosen. Sometimes, a Juraian (or other potential partner candidate) will be brought into the arboretum within Tenju for a tree selection ceremony. Either way, the event is witnessed by at least three representatives of the Royal House.

The candidate goes to a transporter that would take him to the level that houses the 2nd-generation trees. If he is not transported, he will be selected by a 3rd generation Royal Tree. A candidate that is transported will then greet each Tree. If the candidate is greeted, but not chosen, they are allowed to proceed to the level where the 1st generation trees are. There are very few cases where the candidate is allowed to proceed to the 1st-gen level. Azusa and Yosho are two such individuals who were chosen by a 1st-generation tree. In the history of Jurai, only five people have been partnered with a 1st-gen tree (not counting Seina Yamada).

Once a tree chooses the candidate, the candidate then names the tree. The tree is placed into a special core container with the interior designed by the partner. A ship's hull is also constructed to the partner’s specifications. The core of the ship is used to control the power of the tree. Once ready, the core containing the tree is placed within the ship's hull. The hull acts as a channeling device for the tree's power.

The tree then constructs a living space for its partner within subspace, again based on the designs of the partner. Therefore, each Royal Tree Ship is unique in all aspects and suited to fit its partner’s needs and desires. Of the tree-ships we’ve seen to date, all of these subspace areas are constructed to be a representation of a planet’s surface complete with plants, animals, bodies of water, and more.

In order to better communicate with the Royal Tree, a Juraian will carve a key made from the branch and crystallized sap of the Royal Tree. The form of the key is again done according to the partner’s wish. Thus Ayeka has a tiara as her key and made a “trigger” for Sasami, Azusa had a fake eye AND an energy sword for keys, indicating that there can be more than one key per tree.

Keys created from 1st-gen Royal Trees are known as “master keys.” Master keys give their owner the power to control the higher-generation trees. This is why Tenchi was able to override Ayeka’s commands on Ryu-Oh with Tenchi-ken. Tenchi-ken is a master key.

In addition, the partner can have artifacts made from the branches of the Royal Tree to be given as gifts. Azusa had combs created on his first visit to Earth, one of which Funaho’s niece Kasumi had when Yosho chased Ryoko to Earth. This comb protected Kasumi from being harmed by Ryoko. Tsunami gave Tenchi a ring constructed from herself that activated Juraian battle armor.

Another benefit of being partnered with a Royal Tree is the extended life the tree provides via body strengthening and life extension treatments, as well as the Water of Life, which helps to rapidly heal the partner. The Royal Tree can provide backup power to its partner in combat situations. Power is supplied to the partner and at the lower-level generation trees, the partner can activate Light Hawk Wings (as seen in Yosho’s battle with Kagato in episode 5).

With rare exception, Royal Trees are partnered for life with a single partner. There are a couple of incidents which can break the bond between the Royal Tree and its partner. One being death and the other being banishment from Jurai. In both cases, the Royal Tree is then removed from the core and planted in the ground. Once planted, the tree is cut off from Tsunami’s power and thus slowly turns into a normal tree.

As mentioned before, there are rare exceptions where a single Royal Tree has been partnered with more than one person. Mitsuki was unofficially partnered with a 1st-gen tree and before her death, she transferred the partnership of the tree to Azusa (with the tree’s permission). Azusa was able to meet her tree, even though it had never been moved from its place in the arboretum, through Mitsuki. There is evidence to suggest that Mitsuki became one with that tree, which Azusa named Kirito.

Known Partnerships

We don't have a great deal of knowledge as to all of the partnerships. What we do know is that as of OAV 3, there was only one 1st-generation ship in the Juraian fleet. This grew to two by the end of GXP. Here is a list of known tree-ships, their generation, and their partners.

It should be noted that once a Juraian is partnered with a Royal tree, they have "Jurai" added to the end of their name.

Royal Tree Name
Tree Generation Partner Notes
Tsunami light hawk wings

Sasami Masaki Technically, Sasami and Tsunami are the same.
Kirito OVA4
1st Azusa Masaki Initially unofficially partnered with Mitsuki, presumably being one of the five 1st-gen trees that kept her alive. She was then apparently assimilated by Kirito. Kirito means "Sealing Fog."
Tenchi muyo 3 Funaho before destroyed zoomed in
Tenchi muyo 03 royal tree Funaho
1st Yosho Masaki The only known rooted tree not to lose its power.
Gxp 25 zinv royal tree seed
1st Seina Yamada Jinbu/ Zinv greatly predates the actual founding of Jurai, being one of a few seeds Tsunami gave to a long dead civilization. Seina tends to call his 1st-gen Mecha/ship Zinv, the name D introduced it as. In Tenchi Muyo! Ryo-Ohki 4th OVA Episode 4, it is confirmed that the name of the seed itself is named Jinbu. It has also been known as "Idol." In the Renza Federation, many call it "The Original."
Mizuho and Karin 2
2nd Misaki Masaki Karin means "Hazy Scales" and is also a Juraian term for a certain type of cloud formation. It is a twin of Mizuho.
Mizuho and Karin 3
2nd Funaho Masaki Mizuho means "Water Crest." More information about this tree below. It is a twin of Karin.

Tenchi muyo 02 Ryu-Oh tree lights off
2nd Ayeka Masaki Regenerated after being killed by Kagato.
Tenchi muyo 24 Mikagami exterior zoomed in
2nd Seto Kamiki Seto, as a non-native Juraian proves beyond a doubt that one does not have to be a native Juraian in order to be partnered with a royal tree. Mikagami means "Water Reflection."
Gxp 21 Mizuki core unit

Gxp 21 Mizuki tree with Kiriko
2nd Kiriko Masaki While this was done for purely political moves on the part of Lady Seto and Jurai (for their protection), the fact that the royal trees went along with it says something IMO.
unknown 2nd Kotono Tatsuki Unknown details.
unknown 2nd Katsuki Amaki Shuzan Amaki's son, the Head of House Amakil after Shuzan gave up the position.
Tenchi muyo 26 royal tree Kyouko
3rd Noike Kamiki This is a secret experimental ship designed to give 3rd-gen tree-ships the power of a 2nd-gen tree-ship.
Mizunagi 3rd Tatsuki Nishia
Nishia and Mizunagi aided and protected Wahu when she traveled from the planet Kanemitsu to the Juraian Imperial Academy. This may also be one of the ships that took part in the battle against Ryoko and Ryo-ohki.
unknown 3rd

Utsutsumi Kamiki

This is Seto's husband.
unknown 3rd Shuzan Amaki Shuuzan is the current head of House Amaki and a big schemer.
unknown 3rd Tatsua Masaki In the absence of the Royal Family, Tatsua, commander of the planetary defense fleet, led the charge against Ryoko during her attack on Jurai. His tree and the others had trouble attacking Ryo-Ohki because its power came from the same sort of power as the trees and the trees were made to subjugate to any tree greater than their own. This ship was downed by Ryo-Ohki when he tried to make it collide with it, but Ryo-Ohki commanded it to drop its Light Hawk Wings and it shot it down with a direct hit. It is unknown if the tree survived.
Tenchi muyo 21 Minaho unnamed ship
unknown Minaho Masaki Series creator, Masaki Kajishima revealed in an interview that Minaho, Yosho and Airi's daughter, is partnered with a Royal Tree. However, the name and generation of that tree has not been revealed as far as we know.
unknown unknown Amame Masaki Though she is now Yotsuga Amame, she was once a member of House Masaki and the mother of Azusa. Amane left Jurai, and abdicated her position in House Masaki, by planting her tree in the soil.
unknown unknown 1st Emperor of Jurai In the English-speaking world, we don't know if there is any information about his Royal tree partner. It is believed that he would have been partnered with a 1st-gen tree since Tsunami made the pact with him.
unknown unknown Masaki As sister to the 1st Emperor of Jurai, Misaki was partnered with a Royal Tree. What we don't know is the generation. At some point, Misaki traveled to Earth in a tree-ship. She later ended up on Earth's moon, where 'today' she still remains in astral form. Her tree is still alive, which is how Misaki still has an astral form. Beyond that, we don't know all the details of how she ended up on the moon, though the Japanese certainly have greater knowledge of it (which is why we desperately need translators).
Honoka 4th Gen Ringo Tatsuki Honoka is part of an experiment performed by Washu Hakubi to increase the power of Royal Trees, which has increased its power to rival that of a 3rd Gen, and given it sentience. Because of this, Honoka sees Washu as its mother.

Honoka was the only success among the 4th Gen Royal Trees, and so the experiment has been halted.


The Royal Trees are actually fruit-bearing. These fruits are gathered for their juice, which is extremely delicious. Most of the juice is used to produce Shinju Sake, which is so expensive that a single bottle once cost as much money as a planet.[3]