Board Thread:General Discussion/@comment-4976518-20140808063123/@comment-31121580-20200814095651

Captainshunsui wrote: I believe Aizen's bankai could be time related or that he could control the manner of time. It would make sense for him not to use it since it would probably have serious repercussions. The only thing Aizen can't hypnotize with his shikai is time. If he was able to control time with his bankai, essentially, he could screw with his opponents. However, I don't think he could hypnotize time, rather change it. Like he could backtrack a couple of years and come back to the current time and the opponent would feel all the pain they felt from the period aizen went back to. Just my opinion.

his bankai has to be an extension of his shikai, his Shikai ability to hypnotize those that see its release, so the max wank one can give aizen is that his bankai can hypnotize the world around him thus allowing him to control reality, a ability like this is a reason why AIzen could never use it against Gotei 13 since he would lose the Hypnotism of its shikai.