Ayakashi. The leader of the Ayakashi Detective Agency, running a wide-ranging odd-jobs business. He generally speaks politely but has an elusive, aloof air about him. He is intensely attached to his comrades in the agency; if any of them are harmed, he spares no effort in exacted retribution. He excels in combat using supernatural powers unique to Ayakashi and is highly respected even among his own kind.

Ayakashi. In charge of public relations for the Ayakashi Detective Agency. He is weak. In addition to having zero combat ability, he has no motivation to fight, claiming that "battle is not beautiful." While his supposed goal is to promote the agency's work via social media, he mostly just posts selfies of himself. He has a flamboyant, narcissistic personality.

Ayakashi. The agency's top brawler. She has a timid personality and struggles to speak her mind, but due to her high physical ability and combat instincts, she is rumored to be the "scariest person to anger." While she excels in physical combat, her supernatural Ayakashi powers are weak. When cornered, she tends to resort to reckless tactics that leverage her incredibly durable body.

Human. The handyman for the Ayakashi Detective Agency. He was left with the agency as part of a request when he was a baby and was never picked up. Currently in the heat of his rebellious phase and puberty, he often acts prickly and blunt. He is a good kid at heart and frequently regrets his harsher outbursts.