RWBY: Curses? They Curse, Duh?

A person born in Remnant with the anomaly of not having Aura, but something much darker.
A soul with no memories of their past, stuck in another body without any control.

Both of them would have to traverse the world with a broken moon, aided with some nurturing system from a whole different series that only benefited a minimal amount to their development.
...
What kind of weird self-inserted fanfiction is this?

"Quartz, you're rambling again."
"Shush, Sidian. I am currently cooking up our synopsis for our biography."
"(confused noises) ... Where's the food?"
"(finger snap) Right, you're only seven right now. Tell you what, remind me to educate you about culture when you're older."
"(more confused noises) OK...?"

A Jujutsu Kaisen X RWBY Fanfic