Genshin Impact: Return of the Water Queen

The demon goddess Egolia founded Fontaine and made her followers, the pure water elves who longed to become humans, become "humans", thus bearing sin. The people of Fontaine also carried "original sin" from birth.

Five hundred years ago, the god's body perished in a sea of ​​nectar flowers, but the remnant of his spirit resided within the myriad mother trees. Now, as the god's consciousness merges with that of a being from another world, who is the newborn being?

Is it the demon Egolia, the former water god who bears the sin; or is it a passer-by from outer space, a traveler who does not belong to this sky?

…

"At least, save Fontaine and my children."

The newborn god said so.