[Skieth]

^

Spoiler for Spoiler:

In that same chapter on page 23, Guido also says that flashback we saw was created from a combination of Arclight and Blade's brains, records from Disk, and "his own half forgotten memories." Perhaps Guido was offered a position within Triple 6 either during or shortly after the accident that killed Kasumi, and either repressed the memories of what happened, or they were sealed away (Blackout Invoke perhaps??). With no idea that he was a Needless or a member he would have continued on as he always had. If this is the case, it explains why Triple 6 never had any data on Eve, or even the fact that Blade and Eve were even still alive.