The Darkest Light [Hero Song]

In this song, the heroes failed to stop the villain. The light was defeated and darkness won. While everyone else tried to grasp at the dying light to protect themselves, one man resolved himself to use the darkness that was consuming the world to slay the villain. As time goes on he loses more of himself and he knows that he doesn't have very much time left before he becomes what he's desperately fighting to stop. Eventually he manages to defeat the villain, but darkness eventually corrupts everything it touches. Knowing his time is up, he makes the final sacrifice to prevent the darkness from using him the way it used it's previous wielder.