Naruto: I Have an Experience Realm

Boy, do you long for power? A soul who has long been familiar with the plot has traveled to this world. If you carry an experience realm with you, you will become stronger through experience. Decades later, when the Otsutsuki came to the ninja world with contempt, a black-haired boy exuding a terrifying aura floated in front of them, as if they had been waiting for a long time. "Here, I'm covering you." ""