Name of Zaraki Kenpachi's Zanpakuto? In the manga, Kenpachi can't hear his Zanpakuto's sound at all in the beginning. But when he's battling with Captain Unohana (previous Kenpachi, I heard), he began to hear his Zanpakuto's speaking. Does anyone know the Zanpakuto's name or its abilities?
As of today's (16-04-2014) manga chapter (chapter 577) we got to know how Zaraki Kenpachi's Zanpakuto looks and what its name is.

The name of his Zanpakuto is Nozarashi. Also, in order to get into Shikai state the keyword seems to be "swallow".

How it looks: