User blog comment:GinIchimaru/Why Aizen is not "Over-Powered"/@comment-1712587-20100409110057

i'm pretty sure the heritage thing was cleared up. there was a not on the next manga i read saying that the quote had been changed to A human and a..... rather than a shinigami and a.....

this obviously relates to Aizen just about to tell ichigo he is the son of a soul reaper when Isshin turns up and answers the question for him.