Board Thread:General Discussion/@comment-24815992-20140619090507/@comment-25192437-20160408084205

Kaestal wrote: Byakuya, the leading authority of Zanpakutou and their various traits in all of Soul Society. Byakuya said that Soul Society had assumed Zaraki's zanpakuto was in constant shikai release due to his immense power, but upon seeing him use his true shikai realizes they were wrong.