A 28-year-old man, 187cm tall. He has black hair with a deep green tint and green eyes. He is an exorcist who wields the powers of fire, water, and earth. He has been Koo Ha-ri's boyfriend since the 5th grade of elementary school. While he is quiet and stoic toward others, he is incredibly sweet and smiles often for Ha-ri. He works as a freelance exorcist and is currently living with Ha-ri. He always calls Ha-ri by her name with absolute tenderness.