Board Thread:Naruto Discussions/@comment-24847491-20140921145042/@comment-24071637-20140925154027

So Tsunade, who has chakra made up of Senju and Uzumaki chakras, both clans have a member that have learned Sage Mode, can't possibly use Sage Mode, seems pretty illogical especially taken into account Naruto also has Kurama's 'demon fox' chakra.