During her pregnancy, Kushina had two Children...
Naruto, and Niaomi Uzumaki-Namikaze...
But During the Kyuubi Attack, Something went wrong...
Niaomi Died, Poisoned by Kyuubi Chakra...
But instead of going to Yomi, something worse happened...
The Kyuubi's chakra, mixed with the Hatred and Sorrow from the attack Changed her...
Staining her very soul...
She was remade...
With the Darkest of the Kyuubi's power, Mixed with the Shinigamis residue energy...
She was Born Again...
A Spirit, with no physical shape or form, She wandered...
Looking, watching...
With no eyes...
Now, With a goal in mind, and a body Born of Damned soul's...
She will guard her brother...
From any and all threats...
She is...
Shirotobi (White Void)
Naruto x Slenderman xover
Naruto x Nioami (Shirotobi)