User blog comment:Rushawn Mclean/yachiru/@comment-1268838-20100903050445

Not only was she pretty fast, she was able to move that way even while carrying Kenpachi's dead weight; he's a pretty big dude. So she is pretty strong. I'd hate to speculate, but I'd say she'd have to be a pretty good swordsman to become lieutenant of the division. It was easy enough for Kenpachi to OHKO Kiganjou to get his position, but it seems like Yachiru had to work for hers.