Final form of Aizen

After of his research over 100 years, finally this is the worth of  his Seeking a great overpower transfusion of a soul reaper and hollow.

Aizen 100 year's ago

100 year's ago, before Aizen Sousuke became a Captain of 5th Division. He was a Vice-Captain of Hirako Shinji. On that time, Urahara Kisuke became a Captain of 12th Division, he discover the a powerful item that can make him overpower soul reaper. It's called Hougyoku(Gem), and conquer the soul society, by controlling it.