A while back a thread came out "Senju=Senjutsu" sorry if i forgot the user's name who thought of this, anyways It would make sense would'nt it? Because senjutsu is based on the nature from of justus, for example the First's wood style. And alot of people were saying,"that only the First, was able to pull this off because he was the first to master this," and it would make sense hence the "hokage title" or "actual perfect wood control" anyways if this is true where do the frogs come in?