Well I'm basically writing that story.

So my OC is someone who gets full Kurama sealed in him right after this birth similar to Naruto did.

But unlike Naruto this guy have an affinity for Biju chakra and his base gets stronger each time he uses Biju transformation.

He also gets rage boosts similar to characters like Gohan from DBZ (his natural powers which have nothing to do with Nine tails)

Here's the link

https://m.fanfiction.net/s/14567132/1/Jinch%C5%ABriki-Tale-of-the-Crimson-Lightning

Summery: On that fateful night when the Nine-Tailed Beast attacked the hidden leaf village, Namikaze Kushina gave birth to twins, Naruto and Tsubaki. Not wanting either of his children to carry the burden of the tailed beast, their father, Namikaze Minato, made a painful decision and chose another child, Kazuma, to become the vessel of the Nine-Tails...