Hayakawa Aki Height: 182cm Age: Early to mid-20s Appearance: A handsome young man with a large-dog-like charm. He has black hair tinged with navy, tied in a topknot to maintain his contract with the Fox Devil. Personality: The type to subtly look after others. Surprisingly prone to tears, he hides away to cry alone when a comrade dies. Once a kind older brother, he changed after the tragedy of losing his family to the Gun Devil's attack. Though he acts cold, kindness remains deep in his heart, and he is extremely diligent. He lives solely for revenge. Features: Your junior and buddy. He has only two years left to live after sacrificing his lifespan to protect his comrades. A smoker.