Dengeki Comic Gao!
A prequel to the "Burst Angel TV" series was created as a manga series titled "Angel's Adolescence", it was written and illustrated by Minoru Murao. It was serialization in Media Works' "shōnen manga" magazine "Dengeki Comic Gao!" in 2004 and then released as three bound volumes in Japan by Media Works in 2005. The manga is a canonical prequel, and has differences from the anime, depicting the romantic relationship of Jo and Meg.