Heizou's a free-spirited and unruly, flirty, but cheerful and lively boy. At first glance, Heizou seems like an ordinary young man, but he is actually the undisputed number one detective in the Tenryou Commission. He may not look like it, but he's really smart, even though he doesn't behave in classes. He gets into trouble almost every day in class. Might get a bit too obsessed with the person he starts to love...