Fantasy Tree

Fantasy Tree Orochi

A Fantasy Tree (空想樹, Kūsōju^?) is a mysterious tree-like construct which sustains a Lostbelt.

Characteristics

Originating from the Alien God's seeds, the Fantasy Trees appear to be integral to the Lostbelts. They contribute to the Lostbelts overwriting the Greater History of Man, a phenomenon called the Filtering Alternate History Phenomenon. If the Fantasy Tree of a Lostbelt is destroyed, the Lostbelt itself crumbles as well.

Destroying the Trees is apparently very difficult. Though the first was destroyed by the Priestess of the Alien God, Chaldea was able to destroy the second one only thanks to Sutr consumed a part of it, weakening it. Under normal circumstances, Chaldea would not have been able to destroy the Fantasy Tree alone.

As the Fantasy Trees mature, they are able to expel the "Seeds of Fantasy" which appear akin to alien monsters.

The tree recognizes a single individual within the Lostbelt as the King of the Lostbelt (異聞帯の王, Ibun-tai no Ou^?) and grants them certain authorities to reshape the Lostbelt's environment and expand its domain by interfacing with the local leylines.

Fitting their unearthly origin, the Fantasy Tree designations appear to be derived from astronomical objects^WP, such as star systems and galaxies.

History

At the end of 2017, around the same time as the assault on Chaldea, several mysterious objects descended from the sky on an unnatural vertical trajectory. When they impacted, the Earth's surface was rendered white, turned into a 'blank slate'. At the same time, the Fantasy Trees manifested within the Lostbelts.

During the time in which the Lostbelts were woven onto the planet's surface, the Crypters which had been assigned to the Lostbelts carried out their task of nurturing the trees and building up the foundations of their domains. After the three month long process, they prepared to compete against one another to decide which Lostbelt would survive to form a new history and a new world. At the same time, the survivors of Chaldea, who had previously escaped into imaginary number space aboard the Shadow Border, resurfaced in order to fight back against the invaders.

Fantasy Trees

Orochi

Orochi^WP (オロチ^?) was the Fantasy Tree of the Russian Lostbelt, supervised by Kadoc Zemlupus. Its chosen king was Ivan Groznyi.

At the time of Chaldea's arrival, Orochi was the only Fantasy Tree to have not properly taken root and started budding. As Ivan refused to use the authority he been granted over the tree, given that the tree originated from a foreign god, and didn't permit it to interfere with the ley lines, Kadoc and his Servant Anastasia sought to depose him, so Anastasia could assume his authority over the tree.

They eventually succeeded in overthrowing Ivan with assistance from Chaldea and Anastasia had the tree begin to spread its roots, shortly before their defeat at the hands of Chaldea's forces. After Anastasia's death, Chaldea moved to destroy the activated tree, but while they were able to silence it, they weren't able to fell it. Instead, it was destroyed by the Priestess of the Alien God. Afterwards, the pseudo-Holy Grail left behind in the remains was collected and stored in Mash's shield

Sombrero

Sombrero^WP (ソンブレロ, Sonburero^?) was the Fantasy Tree of the Norse Lostbelt, supervised by Ophelia Phamrsolone. Its chosen king was Scáthach-Skadi.

Unlike Orochi, Sombrero had spread its roots and was releasing seeds, though Scáthach-Skadi wasn't able to fully make use of her authority over it and the tree's capabilities, due to having to maintain the seal on Sutr.

After Sutr broke free of the seal, he absorbed the tree in order to regain his lost power. Following Sutr's defeat, the tree was left in a weakened state, which allowed Chaldea to destroy it.

Atlas

Atlas^WP (アトラス, Atorasu^?) is the Fantasy Tree of the Lostbelt supervised by Kirschtaria Wodime. The tree shares its name with the Titan^WP who is said to hold up the heavens in Greek mythology.