[quote=Kurisa]
Shiro had to face his ultimate Shikai skill....the only chance he had of surviving was grabbing the Zanpakuto infront of him which was his Bankai, this allowed him to block his ultimate Shikai skill xD
[/quote]

Im guessing the effects of his own shikai doesnt faze him then? Considerign that the shikai makes the strongest of people freeze in fear and watch the sword deliever their death.