A new planet that's most similar to Earth. It was in front of our eyes and we weren't even aware of it?
Television Show Host, Mystery Footage
Planet Tetis, also referred to as the Human World, is the homeplanet of Tetitians, and the planet chosen by Mr. "???" as part of his migration plan.
Description[]
History[]
Kaden's Adventure[]
Creation of Heavenhold[]
After reading the memory of the Champion's Sword and seeing the future, Kaden united Tetis and the Demon World to help him build a weapon meant to help the Future Hero defeat the upcoming threat. He later disappeared without a trace, resulting the two worlds to debate on who owns the weapon. The project was abandoned, and the Demon World was later given its four Mana Singularity Drive, while Tetis keeps Heavenhold in its incomplete form.