I think the fact that those important to him were either dead or had betrayed him (yes, I am ignoring you Milly and Rivalz) made it that much more easier for him to throw everything else away and go through with the Requiem thing.
The way he faltered when Nunnally turned out to be alive (prompting Suzaku to kick his ass)seems to indicate that he mightn't have thought up such a plan if he hadn't thought she was dead.
(no subject)
The way he faltered when Nunnally turned out to be alive (prompting Suzaku to kick his ass)seems to indicate that he mightn't have thought up such a plan if he hadn't thought she was dead.