K: Return of Kings

Synopsis

Nagare informs Shiro that Neko was also present in the Kagutsu Incident, and she manipulated her own memory to live as a cat. Meanwhile, as Seri stands ready to kill Reisi should his Damocles reach Down, Anna takes the power of Red from all her clansmen and opens a path from the top to the place where Nagare, Shiro and Neko are, exposing them to the Damocles of all the four kings. Kuroh defeats Yukari and reaches Shiro. Meanwhile, Shiro tells Nagare that he has calculated that the power of Damocles Down is enough to counter the power of the Slates and both can negate each other. He maximizes the Weismann level of his own Sword to the limit and brings the Damocles Down and effectively negates the power of the Slates. This results in Nagare's death, since he was only alive using the power of the Slates. On the other hand, since all the Damocles disappear, Reisi is saved from death. Iwa arrives and asks them to escape the building, which is collapsing from explosions, but he stays back with Nagare. As everyone evacuates, the Silver King tells Kuroh and Neko that he has to leave Shiro's body, since it was borrowed and he was only able to contain in it due to the power of the Slates, and that he has to return it to the original owner. In the epilogue we see that Neko has become a student in the school and the Silver King has returned into his earlier body and is a teacher in the same school.

(Source: Wikipedia)