The Invincible IS Unit

Once a former prince of an empire, now marked as a traitor along with his younger sister. After the rebellion ended in his home, John Arcadia is responsible for raising money for the restoration of his kingdom by doing odd jobs and selling some of his inventions. Before, he was too lazy to use his intelligence for good, but now he's created powerful suits of armor to protect everything he holds dear. And he'll need them if he's going to survive an academy of girls, who train in using the latest of IS units.