Shoujo Senki Soul Eater

is a kind of prequel to "Shoujo Senki Brain Jacker ".
Ryuska was going to kill the head of the gangster clan of Kamair, but the plan failed, and at that moment his sister Misa intervenes and exchanges his freedom for his own. Contrary to the danger, Kamair decides to assemble a team and save his sister from captivity. Makoto joins his team, who lost his family from the raids of Kamair bandits ...