Arc 5Eternity and Forbidden Knowledge
The Light Screen showed Ei’s pursuit of Eternity, the Traveler’s challenge that restored change to Inazuma, and the Scarlet King’s catastrophe after he unleashed Forbidden Knowledge. It left the observers learning that the Great Compassionate Tree King saved Sumeru by erasing herself from its people’s memories and entrusting it to Naxida.
- Ei defended Inazuma from the Oni, Tengu, Thunder Bird, and Orobas, whose final defeat left Yashima Island and Musou Isshin.
- After Makoto and other companions died, Ei created the Electro General to rule Inazuma and entered the Sanctuary of Oneness, while the puppet enforced the Sakoku and Vision Hunt decrees.
- The Traveler challenged the Electro General after defeating La Signora, and Kazuha used his friend’s awakened Vision to briefly block the Shogun’s strike.
- With Yae Miko’s help, the Traveler entered Ei’s inner world and used Inazuma’s gathered wishes to defeat her, after which Ei abolished both decrees.
- The Scarlet King, the Flower God, and the Great Compassionate Tree King founded a federation, but the Flower God died and the Scarlet King later brought Forbidden Knowledge into the world.
- The Scarlet King sacrificed himself to seal Forbidden Knowledge, and the Great Compassionate Tree King gave her life and memories to the World Tree to cleanse the corrupted land.
- Apep devoured the Scarlet King’s tomb and was afflicted by Forbidden Knowledge, while the Light Screen revealed that Khaenri'ah’s Abyssal corruption threatened the World Tree.
- The Great Compassionate Tree King erased herself from the World Tree’s records and memories, formed the infant Naxida from a pure branch, and saved Sumeru.