Oohara Satsuki: A short but powerful man who loves justice (?). Tanaka Makoto: Looks like a real delinquent, but is actually a very cowardly guy. One day, these two are suddenly enveloped by a huge light and swept into darkness. They find themselves in a different world that looks like Earth but isn't. Before long, they are captured by a large man wearing a strange emblem, and are forced to work as slaves... One year later, Satsuki and Makoto are sent to the battlefield as "fighters" because of their master's selfishness. They have been putting up with it for a long time, but they are just about running out of patience over this outrageous treatment!