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In order to save humanity, he aims to have them reborn as something greater. Once his plan completes, inequality will end and humans will turn into gods. This is what he always meant by 'returning the age of gods'. On this day humans will have shot down the concept of gods.

In the ship, Da Vinci confirms that due to all the ether being released by the tree, the souls of everyone in Olympus and Chaldea are being 'upgraded' gradually. Soon, all of them will reach Heroic Spirit level while still being humans. 

Kirei declares the entire Britain LB as an enemy of the Alien God, seeing as Beryl was their representative. Beryl mentions the previous Rhongomyniad was magecraft his king had prepared to use vs the Alien God. Once Kirei prepares to kill him, he makes Tamamo take him back. 

Kirei then has Muramasa cut open the tree in order to free the Alien God inside. This lets out a tremendous amount of energy, which Mashu's systems identify as the final of the evils of humanity, Beast VII.

When Chaldea reaches the meeting room, Kirschtaria broadcasts a message announcing his victory and the completion of the fantasy tree. Later, Ritsuka and Mashu see the priestess trying to tell them something, but nobody else sees her so they just hurry and run past her.