Kishimoto has just done the most inhumane thing i could think of...
not even a second chance, but it goes with the Archetype...
Unrequitted love confessed to the one loved, then the unrequitted lover dies in front of the one loved...in this case, kishi may be putting a twist on this archetype where the one loved avenges the unrequitted lover and mourns her death deeply...
with the 6-Tailed form...Pein has no idea what sin he has just committed, at this point..Naruto has become the god...and he will go all out berserker to destroy every last remnant of Pein that ever was...Pein will be destroyed...no, that word is weak now..its been used too many times.
He will be ANNIHILATED.
Pein can't compare to Naruto in his 6 Tailed form, no matter what argument you put up, you simply cannot deny the fact that Naruto MUST win this battle, it follows the Archetype of this battle and knowing Naruto, he will stop at nothing...total and complete obliteration...even if he needs to unlease all 9 Tails, at this point, he would. Imagine, being hated all your life and working harder than anyone else to be acknowledged...then finding out once you're immobile and liable to death that someone has always loved you, then she dies in front of your eyes protecting you.
Its the equivalent of "the Ivan"..the most powerful nuclear weapon ever created, consequently by the Soviet Union.., exploding Ten-Fold in his heart.
Usually Naruto builds up his anger and goes through the tailed forms, but this time...directly to 4...then to 6, where he's building up Kyuubi's bone structure...eventually after 6, the Kyuubi will manifest itself outside of Naruto's body and go on a rampage, until Naruto controls it...this I hope is Itachi's gift, only the sharingan can completely control the 9-Tailed Fox, and right now Naruto is nowhere near in-control, he is death manifested in the form of vengence.
Pein, good luck...you won't last the next two chapters at best. You merciless bastar*, reap what you sow and claim your fate in the belly of the beast.
All of you can't deny what I've said as Truth, you know it. Even if you are a Pein fanatic, you know he doesn't stand a chance...he has officially become the worst antagonist in history, comparable to satan himself. That is EXACTLY what Kishimoto wanted us to see, what he wanted us to feel, what he wanted us to know. Now justice will be served, and it will be served cold with a side-dish of death.