User blog comment:IamJakuhoRaikoben/Chapter 323: The Shadow That Comes And Goes, Review./@comment-5668006-20130316051818/@comment-4829046-20130316135805

Yeah but my pals guessed it. Yes it made no sense motive-wise(until it was explained) but the list of people it could be was really low. The suspects were Obito, Izuna and maybe shisui.