It's a Wonderful World.
Combining their strengths, Neku, Shiki, and Beat manage to defeat Kitaniji's dragon form. The three move on ahead to confront the Composer who, to everyone's surprise, turns out to be Joshua, who reveals that he had been playing a game with Kitaniji over whether Shibuya is reformed or destroyed. Joshua then returns Neku's full memories, revealing that he was the one who killed Neku to send him to the Underground and have him aid his goal of destroying Shibuya. Joshua challenges Neku to a gun showdown with Shibuya's fate on the line, to which Neku decides to place his trust in Joshua and allow himself to get shot...