If obito can speak to kakashi from the afterlife just cause he had his eyes why isn't itachi speaking to sasuke, or is he just blanking him. Same goes for izuna and madara... Maybe plothole :)
Because no matter who you kill even if its his loved ones as long as you say
" I wanted to become hokage though" it doesn't matter plus you get to become the COOlEEST GUY EVERr!!
iv'e recently came up with an idea about tobiramas s/t which i think is pretty cool. first of all i think his s/t uses water to teleport. for example if he uses a water jutsu on a ninja, the ninja would be wet and damaged within that time the shinobi is wet he will be able to teleport to him...
This is just a wild gues but seeing hashirama apparently went mokuton sage it makes me wonder if its a blood line trait. Obviously not very senju is going to have a super powerful on like hashirama only the strong ones, so it's a possibility that tobirama could be a sage of water.