The great mystery of NS so far: just how Hashirama died? The "God" of shinobi, capable of countering every Madara attack gave place to his (yet) younger brother. I've seen nothing of it in the storyline. Also, his death is never mentioned in a manner of avoiding replica atacks. Could Madara be in the shadow of his loss, and Konoha rulers restricted the info? Also, is Yamato keep fueling Madara, being the real reason for Madara to use Mokuton? Or - crazy idea - isn't Yamato a clone, but part of Hashirama that stood alive (yes, Hashirama really died as he was summoned with Edo Tensei) through the years (just like Orochimaru that uses the technique with body switch).