Asura Cryin' is a light novel series by Gakuto Mikumo, published from July 10, 2005 in fourteen volumes, which are sometimes even a manga and an anime. The anime is made in two series: the first broadcast from 2 April 2009 and the second from 1 October 2009. The opening theme used for the first season is "Spiral" by Angela, and the ending theme is "Link", also by Angela.
The story takes place in a high school, and revolves around the protagonist, Tomoharu Natsume, a boy who walks accompanied by his childhood friend, Misao Minakami (who became a ghost after a plane crash that happened three years ago , and which Tomoharu barely survived himself).