Ultraman Mebius Side Story: Hikari Saga
Planet ARB is a very beautiful bluish planet. Ultraman Hikari, who is originally a scientist, set foot in this bright planet to reveal the secret of its prosperity without fighting over tens of thousands of years. There he realized that this beautiful planet has evolved into a living organism, and having been charmed by the beauty of it, he determined to live with ARB. However, ARB denied his wish and conveyed that danger is approaching him.