The Fourth hokage is as everyone knows is Naruto's dad....i mean come on it is obvious....when he sealed the demon Fox inside a neweborn he couldn't have known that naruto was recently born unless it was his child.... and the both know the summing of Gamabuta and the Rasangan then there is the hair and the will...... there is also many more but i need to question.....some therioes.......*sits in shikamaru pose*