Atsushi Nakajima (中なか島じま 敦あつし,, Nakajima Atsushi?) is a member of the Armed Detective Agency who possesses the ability Beast Beneath the Moonlight. All things considered, Atsushi cares deeply for his fellow Agency members and for the well-being of civilians, especially during dire situations. On various instances, Atsushi would not hesitate to help and save others, even those he has never met before. He grew up an orphan in an abusive orphanage.