I have read that Hashirama is very useful for Arena ranking... how do you suggest to use him? Is him really so OP? I mean, he has to create his barrier and he can be easily interrupted or you can find an opponent who steals your barrier...
I have decided to keep my seal scrolls for future treasures, whenever that would be. As 100% FTP, i'll look forward to the endgame while running my lightning and water blitz teams.