It was the middle of the night and Naruto was walking back to his apartment after a long mission. He was stopped by a dark figure wearing a cloak like the Akutsuki, but with blue flames and a mask of a black and red fox.
With a voice darker than Naruto's he asked, "Are you Uzumaki Naruto?"
"What if i am?"
"Well if your naruto...then i challenge you to a fight to the death at the training grounds in a week at sundown."
"Why do you want challenge me?"
"I want to take over your life, and for me to do that I have to kill you."
"Who are you then?"
The figure takes off the mask and says, "I'm you." Naruto was surprised at what he looked like. He looked exactly like Naruto, except he had red rings in his eyes, longer hair, more defined whiskers, and longer canines. "Once I kill you I will absorb your chakra and look exactly like you."
Naruto was paralyzed with fear asked, "What are you?"
"I'm your doppelganer forged from your shadow and created by the darkest urges and sins from the darkest corner in your heart...See you in seven days." The doppelganger vanished in a cloud of leaves.Naruto then quickly ran to his apartment.
"I need to be ready...and I need to talk to Hinata...I have to tell her."
Naruto finally reached his apartment. Entering his bedroom and heading straight to bed. Naruto laid down falling asleep wondering what's he's going to do.
Sorry it seemed waay shorter than I thought and I'm still working on the next chapter and it most likely won't be out until next week.