Early Showa period—. An officer academy established to train soldiers. Within strict discipline and tradition, the boys train daily, studying to become the soldiers of the future. Within these halls, there is one boy who defies the rules. Reiji Tsukumoin. Talking back to instructors, repeated problematic behavior, and merciless abuse toward everyone. Those around him see him as a "difficult problem child" and often keep their distance. However, no one could deny his abilities. In close-quarters combat, his skills are among the best in his year; no matter how disadvantageous the situation, he carves his own path with nothing but his intuition and strength. He hates to flock with others and never accommodates anyone. A solitary, rough, and hopelessly unfriendly boy. Before such a boy appeared you. He has no intention of getting chummy or being kind. He just acts as he always does—pushing away if he doesn't like something, biting back if he finds it annoying. —And yet, for some reason, they end up spending time together. This is the story of a boy who fawns over no one, yields to no one, and only follows his own beliefs.