The Nozarashi (野晒, Nozarashi) is a zanpakutō from the manga series BLEACH that was created by Tite Kubo. The series first began serialization in Shueisha's Weekly Shonen Jump in August 2001. Nozarashi first appeared in BLEACH Volume 8, CH. 65 "Collisions".
The zanpakutō (斬魄刀, zanpakutō) is the primary weapon of all Soul Reapers. While normal Soul Reapers are given a base asauchi (浅打ち, asauchi) to impart their soul onto. Although, Kenpachi stole his zanpakutō from a member of the 13 Court Guard that he killed.
The name translates as "Weather Beaten".
All zanpakutō have three separate forms, but the final two can only be obtained through strict training. Not every Soul Reaper is capable of activating the final two forms.
A sealed for is the first stage of all zanpakutō. This is based from the original asauchi a Soul Reaper is given in the academy. It will often change as the Soul Reaper imparts their soul and power into it. Kenpachi was first found as a young boy with the sword that he had stolen off a Soul Reaper he had killed.
For much of the series, Kenpachi was willfully ignorant to even attempting to evolve the abilities of his zanpakutō and depended on his very own brute strength.
Shikai (始解, shikai) is the first of the seals on a zanpakutō. Activating this power is gained by learning the name of the sword. This is done through extensive training. Upon speaking the name of the zanpakutō, it will take on a new form with unique abilities.
Kenpachi eventually learned the name of his zanpakutō through his training with Captain Unohana and struck her down.
It first appeared in BLEACH Vol. ?? Ch. 577 "BLADE".