Throughout Naruto, Kakashi uttered several thought ... so that Kakashi knows exactly how he feels. With a smile, Kakashi mentions that everyone he cares about is already dead.

Creating an entirely new universe to help facilitate Naruto, Sakura, Sasuke, and Kakashi coming face-to-face with Leonardo, Raphael, Donatello, and Michelangelo, IDW is hinting at some big changes ...