Board Thread:General Discussion/@comment-11398218-20140521105018/@comment-4310945-20140531224527

Yachiru has her own Reiasu that's unique to her, she has her own Zanpakuto spirit, she met Kenpachi before she or him ever had a name in the furthest reaches of the Rukongai and existed before she met Kenpachi. A Zanpauto having a Zanpakuto of their own is redundant. Also there has been no proof that a Zanpakuto can manifest itself without being forced out by the Shinigami in question. If Yachiru WAS Kenpachi's Zanpakuto spirit her Reiasu would be nearly identical to his. She couldn't have been imagined by Gremmy because she lived as far away from the seireitie as you can get and Gremmy was focused on killing Kenpachi so he couldn't have erased her from existence. Tite Kubo showed us a flashback of Yachiru and Kenpachi meeting again because of the name theme Kenpachi has going on.

Xilinoc wrote: The flashback itself was referring to his not having a name for the longest time as well, and Yachiru was basically comparing Kenpachi's lack of names then to his connection with his sword now. It was a way of showing development and getting some emotional impact as well.

There is all the evidence you need to debunk any theory that connects her disappearance with Gremmy, his death or the activation of Nozarashi.