Board Thread:General Discussion/@comment-4957813-20131130185522/@comment-4957813-20140604124734

Gacsam wrote: Benter wrote:

Katen Kyōkotsu and Sōgyo no Kotowari manifest them self as 2 separate spirits. Hisagi's zanpakuto has only one spirit. For the latest version of Zangetsu it is unknown. As far as I know, they "show" themselves as 2 separate entities, but they're still one spirit, while Ichigo's blades are 2 different spirits ("Hollow" Zangetsu and "Quincy" Zangetsu)

Well the "Quincy" Zangetsu was never his actual Zanpakuto, just an imposter. Ichigo only considers him as part of his true Zanpakuto, to my understanding. As for Katen Kyototsu and Kazeshini, we can't go by their spirit representations as they were only shown during a filler arc and are therefore non-canon representations of their Zanpakuto.