Two orphaned siblings, Toshio and his younger sister Maki, navigate a world where childhood innocence collides with grotesque supernatural horror. Maki possesses latent psychic abilities, powers that inadvertently attract malevolent spirits and draw the pair into a series of dangerous paranormal incidents. The narrative is structured as a horror anthology, with each chapter presenting a self-contained venture into the unknown. The pacing is rapid, often escalating from a calm setup to visceral and graphically violent confrontations without warning. The setting is a contemporary Japan where the dark holds genuine terrors, and the siblings find themselves entangled with curses, ghosts, and other entities that thrive in the absence of light. A notable arc in the latter half of the series, particularly across the final two chapters, shifts from the repetitive cycle of monster-of-the-week encounters to a more substantive and slower-paced narrative, delving deeper into the bond between Toshio and Maki and the source of her powers. The manga concludes within a single collected volume, chronicling the children's relentless struggle to survive the darkness they cannot escape.