After his father's death, Kai Ikki found himself discontented with the monotony of his existence and harboring a craving for excitement. One day, attempting to escape his ennui, he went for a run in the nearby forest and happened upon a Japanese Defense Forces soldier who transformed the trajectory of his life. Forever altered by this encounter, Ikki became single-minded in his pursuit of a career in the military. Will he manage to accomplish his objective and conquer the rigorous regimen that lies ahead?