In the void, between various worlds' heavens and hells, a soul awakens. Blue, with blots of crimson, 3 tomoe revolving. Unsurprisingly, Madara feels rage. Rage for Zetsu's betrayal and manipulation and his clan's destruction, indirectly through his actions. But more than that, he feels... remorse. For what he had done under the guise of worldly peace. So he accepted his fate. Or so he would have.

In between dimensions, a god reigning in the "creativity derived worlds" subtype and "Energy Creation" laws named Masashi Kishimoto notices the soul.

"In the end, you caused pure destruction. Maybe in your next life, you can become like a hero in the tales of old, fighting for good against evil. But for now, repent."

"A hero of old after my cycle in Samsara, huh? I'd like that. Sounds filled with fierce battle."

"...Tell me: given such a chance, would you go forth and become a hero?"

"I'd like to say sorry to Hashirama first. I did use him and maybe ruined our friendship. But... yes."

"I'm sure you'll find a way. For now, your new life in Remnant is getting started." Calling Hagoromo, they jointly began sending the soul to Remnant with a request and explanation to Oum.

"Hn. Wait, what?!"

"Go say 'Hi' to Oum for me~! His world needs fixing, under a new divine hero or... heroine, hehe. Maybe two."

And so Madara is sent to Remnant, completely prepared of course. Maybe not mentally, but that's besides the point.

And he's a female kitsune faunus of 13 years old now, courtesy of lower god Hagoromo's input. Hagoromo and Oum got some good taste: black hair, ruby eyes, fox ears and tail(Kurama out for revenge), and a thirst for dancing. Metaphorical or literal? Yes.

Btw, I don't own elements from Naruto or RWBY or any art apart from OC's. Madara is powered down, but her experience in battle will leave her leagues above the rest and she'll keep her EMS instead of the Rinnegan. Though EMS will be changed to a different one. Posted at Webnovel, Scribblehub, and Webnovel. Cover page is from Second Heaven/Johnanyy https://www.pixiv.net/en/artworks/24035582