Galaxy Angel

Galaxy Angel (Japanese: ギャラクシーエンジェル, Hepburn: Gyarakushī Enjeru) is a bishōjo sci-fi metaseries composed of anime, manga and dating sim video games. It was created by Broccoli in July 2000, when it launched a multi-platformed project called Project G.A. The anime and Galaxy Angel Party manga comprise a comedy story in an alternate universe, while the games and the regular manga have a serious romance and action plot.
A sequel to the game trilogy was released in June 2006, entitled Galaxy Angel II: Zettai Ryōiki no Tobira, and stars an entirely new cast, the "Rune Angel Troupe", and a new feature that combines the new Brave Heart frame with any of the Angels. Each of the Rune Angels has a connection to one of the Galaxy Angels, such as Apricot Sakuraba, the younger sister of Milfeulle Sakuraba. Just like the original Galaxy Angel, the Galaxy Angel II series is a trilogy of games and has a manga adaptation and comedic anime spinoff. The second Galaxy Angel II game was released in October 2007 entitled Galaxy Angel II: Mugen Kairō no Kagi.
The success of the video game and anime series influenced the creation of a manga series based on the video game universe. In Japan, the series became so popular that a musical based on the series was made. Entitled "GALAXY ANGEL ~The Musical~", it debuted in March and December 2005, and featured cast members who also worked on Galaxy Angel II.