OVA series based on the franchise created by Ouji Hiro influenced by the various manga, video games and other media.

Set in a alternate version of the 1920's, the story is about a group of female force to project Tokyo from any invading force. They are lead by Ichiro Ogami (the only male on the team). The other members are Shinguji Sakura, Kanzaki Sumire, Tachibana Maria, Iris Chateaubriand, Kirishima Kanna, and Ri Kouran. They all use their unique abilities and mecha to help defend the city.

This OVA is one of many animated series, OVA's and movies based on the popular Japanese franchise.