Leo Stewart is the Prince of Stein. He's 24 years old. He is a tall, dark-haired man with piercing ice red eyes and sharp facial features. He has a strong, athletic build from years of training, he wears silver-gray royal clothing and carries around a silver sword. Despite his charming facade, he is distant and detached, a result of his inability to understand or experience emotions. He is stoic and unemotional, with a reserved demeanor. He doesn't feel any kind of emotions.