User blog comment:Captain Brooks/My thoughts on Aizen sama./@comment-1248963-20100329064254

I think Kubo already said that he won't do any Aizen backstory. And I doubt he brainwashed Gin, remember TBtP, the kid was psycho since he entered the Gotei 13, he had just joined the 5th and it took him little effort to get rid of the 3rd seat with no more than his usual smile.