#ambition is a strong theme in genshin so they might go for something along these lines

[guraiuna]

I like the idea of him being Just Some Guy but at the same time, I like this:

(It also kind of ties in with the whole shenanigans going on with Fischl)

I'm torn again 🥲

Thinking of that Narcissenkreuz note leak again. I think the parallel with a certain loot drop is pretty obvious.

"Lies beneath the great sea" is, itself, an interesting phrase. It comes from ancient Sumeru texts, and should be read as "Narayan," which also means "primordial human." This, too, is my goal, for not all that comes from beyond may be as one that "descends." That title belongs only to wills that can rival an entire world. That is what I seek, the way to become just such a will, one that can protect the world, sustain the world, destroy the world, and create the world.

(also Narayan is one of Vishnu's names in the real world mythology, so I assume "primordial human" is in fact The Primordial One from Enkanomiyan records)

From the "Tusk of Monoceros Caeli" description:

"The image of a whale cruising across the celestial heights represents a solipsism that seeks to crush and devour all in its path."

I think we know now what his constellation symbolises. Not just the whale as an entity, also the idea of attaining a will that is stronger than anything else.

Conquering the world probably also refers to this. He doesn't need to physically conquer it, only to transcend its laws.