During the start of the war between Shinigami vs Quincy, we saw that a large number of Shinigami and Quincy’s died, one of which was Izuru Kira’s death. Even before the battle began, a stream of light blasts through and hits Kira’s torso, which destroys the right part of his body into nothingness. From then on, we had no clear proof if he’s dead or alive, here’s why Kira is still alive.