Teyvat had civilizations from the Previous Civilization, and they were not Dragon Race civilizations, but human ones. Yet by now, those civilizations had basically all perished. The strangest part was that traces of them were almost entirely underground. Mondstadt had them, Liyue had them, and Inazuma had them as well.
As for Sumeru, there was even less need to mention it—Khaenri'ah was right there. If someone could look down upon the entire planet of Teyvat, they would find that there was every chance of connecting the traces of these underground civilizations. Most members of the Abyss Order, along with Khaenri'ah's surviving people, remained within these ruins. Coupled with spatial teleportation spells, even Asmodeus needed time to capture them.
"So this is the Sacred Sakura Tree. It really is enormous. I could cultivate one."
When Shen Fei, Lumine, and Paimon arrived at the roots of the Sacred Sakura Tree beneath Konda Village, Shen Fei immediately examined the entire tree. It was exceptionally massive, its roots spreading throughout the underground of all Narukami Island. Inazuma had recovered so quickly from Khaenri'ah's disaster precisely because of this Sacred Sakura Tree.
The problem with the Khaenri'ah catastrophe was not merely the Abyssal monsters. Its root cause was Abyssal Power. Even if those monsters were slain, Abyssal Power would still corrode the land, leaving it barren and unable to grow a single blade of grass. That was why the Sacred Sakura Tree existed. It could ward off evil and purify the Ley Lines.
This had been requested by Inazuma's other Raiden Shogun, Raiden Makoto, from Istaroth, the God of Time. It was a tree planted in the present that could grow five hundred years in the past. Istaroth's power over time was truly miraculous, able to turn effects into causes.
Unfortunately, miraculous as that power