Board Thread:Questions and Answers/@comment-4310945-20140425001334/@comment-5398287-20150527120910

UncleBazerko wrote: Something that's been bugging me ever since watching episode 310:

During his sentencing in Central 46, Aizen is warned not to be so "high and mighty" just because he is immortal. I realize that Aizen gained immortality because of his use of the Hōgyoku, but what actually happened to the Hōgyoku right after Kisuke Urahara's Kidō spell finished sealing Aizen? Did it just disappear? Kisuke Urahara said that the Hōgyoku no longer recognized Aizen as it's owner, so what the hell became of the Hōgyoku? The Hōgyoku is still in his chest, I believe.

As for the question of this thread, with the recent developments in Yhwach's powers, technically he could nullify Aizen's immortality and defeat him. I think. It's very hazy.