User blog comment:Xilinoc/Ch. 554 - Desperate Lights/@comment-4509522-20131024133328/@comment-9096222-20131025101808

Ok, examine this page http://i3.mangapanda.com/bleach/507/bleach-3582241.jpg. here we can see Du using the Bankai, and Shiro having hit marks on him, meaning that Du used the ban, maybe not berserk style but he did inflict some damage on Shiro with it, sooooo pyon^^