To reiterate, Zarai Kenpachi's lieutenant, Yachiru Kusajishi, is the Bankai spirit of Zaraki Kenpachi's sword. In other words, she is part of Kenpachi's Zanpakuto Spirit, Nozarashi, which was ...

Kenpachi Zaraki's Zanpakutou is named Nozarashi, Japanese for "Weather-Beaten One". Nozarashi's true form, her Shikai, is a gigantic cleaver who can cut through anything, even the fabric of space.

Since a Kenpachi must kill the previous Kenpachi to inherit the title, no one had properly inherited it from her. Zaraki's defeat of Unohana in Thousand-Year Blood War confirmed his claim to the ...