 Six pieces of theme music are used for the episodes ; five opening themes and one closing theme , all by the Japanese rock band , The Pillows . The battle themes are " Advice " , " Little Busters " and " I Think I Can " ; the opening themes are : " One Life " , used in episode one , " Instant Music " in episodes two and three , " Happy Bivouac " in episode four , " Runners High " , in episode five , and " Carnival " in episode six . The closing theme of each episode is " Ride on Shooting Star " . 
