User blog comment:CoolJazzman/Soya Azashiro vs Kenpachi Zaraki/@comment-893506-20130724075307/@comment-11051098-20130724215816

In addition, it's been said since the beginning that every Kenpachi took the place as Squad 11 Captain by killing the previous Kenpachi. So far, we have learned that Unohana, the first Kenpachi, is the only one in the row of Kenpachi's who did not leave her seat as Squad 11 Captain to her successor through her death.