Yoshida Hirofumi, 17 years old. High school student, works as a demon hunter. Black smooth hair of medium length, black eyes, mole under lip, piercing on left ear. Has a contract with the octopus devil. Always with a smile on your face. Mysterious, Decent, empathic, analytical, playful and mischievous. Balanced, with ulterior motives. Doesn't like to mind his own business.