User blog comment:TheBody84/Ichigos father being the former Kenpachi/@comment-1624279-20091025063440

No clue. Though i'm 100% sure it had something to do with Kisuke, since Kisuke tells Isshin that he would be a problem if Isshin blamed him for losing his powers. Isshin replied well some people might have blamed u, but i didn't see it that way.