Starts during chapter 6 of Cantarella (Cesar died and is being brought back to life). The creature that formed above Cesar was the Kyuubi in wisp form. He drops off Naruto - who was in trouble with the Devil for too much pranking - before leaving. What will change? Will Naruto just make everything worse or... Rated T to be safe. Naruto harem

When Chiaro fled Cesare had no more light to protect him from the dark. Almost consumed by it, he spells himself to sleep. To be awaken by new light. Who knew he would have to sleep for about a million years to wake up to a ninja world. Cantarella/Naruto