Alien Nine (エイリアン9, Eirian Nain) is a four episode OVA series based on a manga written by Hitoshi Tomizawa that was released from June 25, 2001 to February 25, 2002. The anime was licensed and dubbed by Central Park Media who released it on DVD on July 8, 2003.
Synopsis
Yuri Otani , much to her disgust, has been elected by her class for alien fighting duty. Together with Kasumi Tonime, who joined the alien fighter simply for the sake of doing so, and Kumi Kawamura, who became and alien fighter to avoid the responsibility of yet another year of class presidency, she must defend her school from periodic alien attacks. Introspection, fear, anxiety and friendship await Yuri as she is forced to stare life itself in the mouth in her chaotic coming of age.