Board Thread:General Discussion/@comment-4976518-20140808063123/@comment-35233810-20200829135027

This could be a possible reason. However, I think Kubo put this theory to bed. He told us what his bankai is. It's all in the name. Most shikai have one name. While all bankai have more than one. Kubo created his own illusion by trolling us in to thinking that he is using his shikai when it was his bankai all along. That is the hypnotism of Aizen.