A horrific encounter with a restless spirit traumatized Keitaro Gentoga to the point of becoming a shut-in to avoid further disasters. But no man is a haunted island, and he eventually rejoins society by taking a part-time job tutoring the child prodigy Yayoi Houzuki. Yayoi isn’t just a genius, though. She’s a gifted medium hell-bent on finding the malevolent spirit behind her mother’s vanishing. And she’s gravely determined to drag Keitaro into her terrifying and grotesque supernatural world.