User blog comment:GinIchimaru/Isshin and Urahara's relationship/@comment-1774413-20100410183526

@IchigoFan - i dont quite understand what you are trying to say, but the fact is that Urahara know the Vizard, he helped them with controlling their hollowfication and gave them untraceable gigais, so he knows they are not evil shinigami that tried to gain hollow powers, yet he didnt correct Isshins view of them as criminals.... so he has definately hid facts from him