Ultraman Mebius Side Story: Hikari Saga - SAGA 1: Arb's Tragedy.

Ultraman Hikari visits Planet Arb, where a prophecy warns of its coming destruction. Guided by Ultraman King and armed with the Knight Brace, he faces the monster Bogarl. Consumed by rage, Hikari transforms into Hunter Knight Tsurugi and begins his path of vengeance, one that will eventually lead him to Earth.