It's the last day of the Ranger promotion exam. After the top five elite recruits joined hands against the rest, D rallied those who were left behind to form a team of his own...and they have a secret weapon that just might even the playing field, the "Burst Form"! A fierce battle breaks out over the "keys" that will determine which five candidates will advance, and convictions are put to the test. Will D finally be promoted to a full member of the Ranger Force and take his first steps toward defeating the Dragon Keepers?