Naruto stared at his long time rival; he watched the blood drip from his head to the floor. He felt the stinging pain. It would all be over soon… not for him, but for Sasuke.
Sasuke stared at Naruto's blood dripping onto the floor. The one thing he would remember were those eyes… they slowly transformed at the pupil, elongating into thin slivers that held feral intelligence, glowing a slight red, he watched narrate rip off his shirt to reveal his seal. The seal glowed a dark red that reflected sickly in Naruto's eyes making his seem even more insane. Muscles began to bulge from Naruto's form, his hair grew longer, claws ripped themselves to the surface of Naruto's hands glistening a pale yellow in the moonlight, fangs glistened in Naruto's mouth.
Naruto raised his head and at that moment a cry ripped itself from his throat, it was heard hundreds of miles away chilling the bones of all in the range, it caused animals to panic and children to cry, it tore all hope from a man mind and drove him to insanity.
Naruto surged forward towards Sasuke, his claws ripping the dirt as he tripped and stumbled to get to his opponent who stoop staring, watching, frozen in terror. Another bellow tore itself from Naruto's great maw sending a fresh wave of terror at his enemy. Naruto raced forwards and stopped. He saw he blood dripping from his freshly made claws. He quickly made many complicated writings on the ground and took out a blade, cutting the seal in half. He writhed on the group blood pumping itself from his guts and then it stopped. The seal was gone, and so was mankind.
Forty miles away the young boy stared at were he thought the noise had came from. All he saw was a giant nine-tailed fox that glowed like the moon.'
It was the end of mankind