[4] On August 19, 2008 Funimation, on the behalf of d-rights, sent cease and desist orders to the fansub groups who were subtitling the series, to prevent copyright infringement.
The opening theme is "Crawl", performed and arranged by Veltpunch, with the lyrics and composition by Hidenori Naganuma.
The ending theme up to the sixteenth episode is "Hikari" by Elisa, with lyrics by Emi Nishida.
From the sixteenth episode to the end, "Aru ga Mama" (あるがまま, "As It Is") by Anamu & Maki is used.
[10] Funimation released the English language adaption of the anime series in two DVD sets.