User blog comment:Xilinoc/Ch. 662 (not released at time of writing)/@comment-25897574-20160212090816/@comment-25897574-20160214081212

I agree with you on the Kenpachi thing since the rule that let him become Captain was set down by Unohana and what she says goes. Whether Yoruichi likes using it or not, now isn't the time to be picky since all of reality is kind of on the brink of annihilation. If she did lose it, what happened to it then? Crazy theory: maybe the ability to fuse with a Zanpakuto like from the Sealed Sword Frenzy OVA is canon and that's why Yoruichi has all of these cat transformations.