Magical Girl Lyrical Nanoha is a fantasy adventure anime and manga series written by Masaki Tsuzuki. Set in a fictional universe, its storyline follows several different users of magic as they become involved with incidents related to powerful ancient artifacts. Four anime series have been produced by Seven Arcs between 2004 and 2009 with music direction by Toshiki Kameyama. The first season anime television series entitled Magical Girl Lyrical Nanoha directed by Akiyuki Shinbo was broadcasted in 2004 spanning thirteen episodes. The second season of the anime series entitled Magical Girl Lyrical Nanoha A's directed by Keizō Kusakawa was broadcasted in 2005 spanning thirteen episodes. A third season of the anime series entitled Magical Girl Lyrical Nanoha StrikerS directed by Keizō Kusakawa