Shinseijū

The is the  of the Shinju and the result of decades of research by Yamagakure shinobi.

Background
Using seeds from the holy tree, found in the aftermath of the Fourth Shinobi World War, it was discovered that by fusing massive amounts of chakra—such as that of a tailed beast—with the seed, would then cause it to activate and grow. Wanting to increase Yamagakure's military power, Ryun Uchiha, then the First Yamakage, imbued the seed with the power of the tailed beast chakras he had under his control; completely fusing the chakra of both Myōbu and Sun Wukong with the seed in the process.

The result was a tremendous tree with massive amounts of chakra. Ryun then sealed the tree within himself in the hopes of harnessing its powers.

Abilities
Like its, the Shinseijū is a tree of tremendous chakra. As a result, anyone able to harness its power becomes immensely dangerous. Ryun, having witnessed the parent tree during the war, notes, however, that the Shinseijū's power is less than the Shinju's, though by how much is unknown.

Chakra Fruit
Much like its parent, the Shinseijū is also capable of producing a fruit imbued with tremendous chakra. In order to create a fruit, the tree must take root on the planet and begin to absorb both the and chakra from within. Once ripe, the fruit can then be eaten, granting the one who eats it comparable power to that of the Ten-Tails' jinchūriki.

Influences
The Shinseijū takes its name from the Japanese translation of the Tree of Might—a massive tree, featured in the movie , which absorbs the energy from the planet it is rooted on, in order to produce a forbidden fruit only to be eaten by the deities of the Dragonball universe. Its nickname, the "World Tree", comes from another massive tree in the same fictional universe; the Kaiju.