Galaxy Angel

Everything in the Galaxy Angel franchise, excluding the spin-off.

"Galaxy Angel 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." - Wikipedia