Sora wo Kakeru Shoujo

, is a Japanese anime series, created and produced by Sunrise. Based on the original concept by the Sunrise animation staff, the series is directed by Masakazu Obara and written by Jukki Hanada, overseeing a team of animators noted for their previous work on My-HiME and My-Otome.

Plot
The story is set in the year 311 of the Orbital Calendar, when humanity has migrated to countless colony clusters in space. A space colony girl named Akiha Shishidou encounters a malevolent artificial intelligence named Leopard that has been installed on a colony.

Akiha is joined by an Inter-Colony Police officer named Itsuki Kannagi, a taciturn young girl named Honoka Kawai, and a robot named Imoko "Imo-chan" Shishidou.