Naruto Rise of a Rogue

Because he was tired of the real world, he was reincarnated into the body of Sasuke, who was only five years old. The genocide was irreversible, and he had no intention of saving it. "Brother Itachi, this time it's your turn to bear grudge against me. Your brother has long been replaced by an outsider." In order to save all the poor girls, he is determined to become the strongest in the world. (It's not pure Naruto, it will also enter other anime worlds. If you don't like it, you can skip it.)