Board Thread:Questions and Answers/@comment-7708862-20130402005255/@comment-3507581-20141119232011

Insistente wrote: I'm not gonna spoil it for you but yes, there's more aizen flashbacks... aizen and his research are very much a huge part of the story.. kubo has much more to show us that hasn't been revealed yet... again, read the manga since that is the true source of canon material for bleach

This.