Eri Kitamura
A 26-episode anime adaptation by Studio Deen aired in Japan between April 3, 2007 and September 24, 2007. The series aired backwards chronologically with episode one being the last episode and episode twenty-six being the first in the story's internal timeline. Chronologically, episode 26 is first, then 24 through episode one, and episode 25 is last. The opening theme is by Eri Kitamura with Mariya Ise, and Saori Hayami. The ending theme is by Saori Hayami.