Mainichi Broadcasting System
is a Japanese anime series produced by Sunrise, Mainichi Broadcasting System, and Project Geass. The first season, entitled , premiered on Mainichi Broadcasting System on October 6, 2006 and was broadcast by a total of ten stations. Its final two episodes were aired on July 29, 2007. It was followed by which aired on April 6, 2008 and was broadcast on sixteen stations. Its final episode aired on September 28, 2008.