no way is any hokage soloing. they are up against 7 kages after all. mu cant be countered unless minato uses his "detection by finger" thing. and maybe hiruzen could smell him out. gaara will have more than enough time to make a sandstorm, and blind team 2, before attacking from below. only s/t users and 2nd mizu escape it. raikages speedblitz mei and tobirama.