Hell
The Zanpakutou of a Shinigami can only cleanse spirits of the sins they committed as Hollows. If the spirit committed heinous crimes as a Human, it will not be sent to Soul Society, but through the Gates of Hell.
The Zanpakutou of a Shinigami can only cleanse spirits of the sins they committed as Hollows. If the spirit committed heinous crimes as a Human, it will not be sent to Soul Society, but through the Gates of Hell.