User blog comment:Xilinoc/Ch. 590 - Marching Out the ZOMBIES/@comment-31283382-20140727222647/@comment-3230060-20140729125610

I have a thought on that....Orihime. If she really is as god powerful as is lead to believe. She could have returned all the espada and arrancars. It may have even been part of the deal with grimmjaw and Kisuke.....Now let me blow your mind. If she could bring them back that far...Ulquiorra.....it's POSSIBLE. however unlikely.