So I had a thought. I was thinking that maybe the Uchiha bros. (Itachi and Sasuke) kind of mirrored the other Uchiha bros. (Madara and Izuna). We know that Izuna is younger than Madara, as is Sasuke to Itachi. And we know that both the older of the bros, (Madara and Itachi) have died and the younger bros havent. Could this be some kind of connection? And if so, could tobi possibly be Izuna? (not trying to start a 'Who is tobi' thread, cuz there are enough of those.) What are your guys' thoughts?