User blog comment:Shishio san/Killers not Dead/@comment-2074153-20121212124130/@comment-5405150-20121212150309

I suspect she went through some change, regretting the people she has slaughtered and did a 180 to become all about Peace and Healing. She probably changed squad which left a Vacancy open to Squad 11 Captain and a new Kenpachi.

Which would also explain why she has been chosed to train him, if she can relate...