User blog comment:Xilinoc/Ch. 581 - THE HERO 2/@comment-10630156-20140521135516/@comment-10630156-20140522002619

Just a feeling I have, Moving around that quickly and effortlessly Shunpo-ing past four people who are probably all low Captain level without them noticing. My first thought on this matter was he'd just become faster but then this is such a huge boost in that area that I think his constantly released Shikai has something to do with it. Otherwise he'd just be too fast in Bankai. Unless one of my old theories about Tensa Zangetsu is actually correct and he has a time based Zanpakuto, in which case I called it :P