World Tree

The World Trees are the bases of each world. They are said to bear no fruit but provide life and mana. The World Trees give birth to Descenders whenever they are threatened, with the Descender's strength proportional to the mana the World Trees have. They may also use several Descenders, as Mormo, the Descender for Yaoon, states that he is his world's third Descender. Their roots form the earth of the world, and the towns which their roots are concentrated under are best protected from mana drain. Subsequently, when too much mana is used through the use of magitech and the like, the tree's roots retreat and are more easily destroyed. In addition, as is implied to have happened in Kanonno's world of Pasca, sometimes the World Tree is unable to restore its mana if the mana has been corrupted, leading to a steady weakening.

It is Widdershin's desire to make an unending world that fuels his quest to devour all worlds and assimilate them into his own, Gilgulim, which he has turned into seed form. To do this, he either convinces the world's Descender to combine their world with his or forcibly devours theirs. To do so, he leaves Gilgulim nodes all over the world, which drain mana, causing that World Tree to wither, retreat, and eventually be absorbed. In response to his threat, Terresia's World Tree gives birth to the Protagonist, who steadily destroys the Gilgulim nodes throughout the world. As the World Tree's health fails, however, so does the Protagonist's, who passes out after exerting great power. When Widdershin is defeated and Gilgulim is destroyed, the World Tree finally bears fruit. Each fruit that Terresia's World Tree bears is one of the destroyed worlds, as Mormo and Kanonno discover their own. After being left alone, the Protagonist finally rests and returns to the World Tree.

In the AWA fics, the World Tree is under the protection of the AWA.