Majin Tantei Nougami Neuro is a supernatural anime series that follows Neuro Nougami, a demon detective who feeds on mysteries. Unable to find a challenge in the demon world, he arrives in the human world to solve the most complex cases. Neuro partners with a high school girl, Yako Katsuragi, using her as his 'face' while solving crimes. Together, they unravel intricate mysteries, with Neuro consuming the energy of each solved case.