Just noticed this, since it was passed easily with the pages, figured I mention about it.
Kind of asking himself "Should I act before he can? Should I wait to see if the Fortune Teller was saying the truth? What will I do after I kill the Emperor?" etc. etc. never certain of what to do until the final moment.
Not to mention, that part of the Prima Guide, and for that matter same with the Realm of Torment quests, were from other's perspectives, not Shiro's. the Prima Guide shows from Vizu's perspectives and the perspective of other people who's souls that were recovered by Ritualists.
All in all, all four sources somewhat contradict each other really.