User blog comment:Xilinoc/Ch. 637 - BABY, HOLD YOUR HAND/@comment-2120712-20150730092933

Maybe the Left hand merged with one of the quincy under Juha's control and as a result of the fusion has two minds that are fighting for control of said body.

Maybe the legs are out there as well. What if Yorouichi has one or both of the legs thus fueling her speed abilities and influencing her to not use her zan in battle.