Six pieces of theme music were used for the series. For the first 23 episodes, "Red Fraction" by Mell serves as opening theme, and "Don't Look Behind" by Edison is used as closing theme, except for the fifteenth episode, which features "The World of Midnight" by Minako Obata. Episode twenty-four lacks an opening theme and uses "Peach Headz Addiction" by Breath Frequency as closing theme.
Six theme pieces were utilized in the series. For the first 23 episodes, "Red Fraction" by Mell was the opening theme, while "Don't Look Behind" by Edison served as the closing theme, except for the fifteenth episode which featured "The World of Midnight" by Minako Obata. The twenty-fourth episode did not have an opening theme and used "Peach Headz Addiction" by Breath Frequency as the closing theme.