In Naruto Manga 493, during the visitation of Naruto Uzumaki within the Waterfall of Truth he saw another likeness of him which eventually he came to know as his Dark side or his Hatred. He fought it but it has also the same strenght and technique like him.

Continuing reading the Manga might revealed how naruto can beat his Hatred self.

The fourth Hokage appeared witin Naruto’s conciousness as soon as Kyubii’s 8 tails was released after Pain’s uses his forbidden technique called Chibaku Tensei.

I looked forward to seeing how my son had grown. So, I guess you could call it even. The 4th hokage said to naruto.

Does this mean this Naruto Manga 439 just answered the question “Who is the father of Naruto ? Let see on the next Naruto Manga 440.