Board Thread:General Discussion/@comment-4976518-20140808063123/@comment-27392440-20160306181615

In the end it might be more valuable to ask how any sensory type might change when in bankai and try to apply that to Aizen, that's why my previous post suggested that it would create a delusion about the world rather than just create illusions as I doubt another sensory type like Sakanade would grow to making his sensory alteration into a real change in the world. I also think it needs to be explained why he never went bankai, as every other captain so far has had a good reason for not using it which makes me think powerful sensory type zanpakuto like Kyoka Suigetsu and Sakanade probably have some huge disadvantage that makes bankai inconvenient to use flippantly. It's also possible that Aizen may have fused with his zanpakuto and can use its powers himself which would explain how he was able to confuse Yhwach's sense of time