Naruto: This System Is Pretty Powerful

This is a wish-fulfillment story about a reborn Itachi who gets a System, destroys the entire ninja world, and creates peace. If that's not your thing, feel free to move along! “Sasuke, forgive me!” As Sasuke killed him, Itachi's eyes revealed relief, along with a desire to atone for his clan. But in the next instant, in the Uchiha Clan, young Uchiha Itachi's eyes suddenly flew open! “What is this?” Itachi looked at his small body and realized he had returned to his childhood. At that moment, a System notification rang out! “Ding! Eligible character detected. Awaken the System?” “A System? What is a System? My rebirth must have something to do with it! Awaken!” “Ding! Your System has awakened!” And so, a ninja-world internet cafe, a ninja-world stat-allocation System, and a ninja-world storage-and-refund System were born!