After his father's death, Hachiouji Tarou, a typical second-year high school student, stepped up as the head of his family, with his primary concern being keeping his brother out of trouble. However, when he came home one night, he discovered his mother's decapitated head on the floor and an malevolent entity abducting his younger sibling. Though Tarou hesitated at the time and couldn't assist, his current goal is to locate his brother and neutralize any malign spirits causing harm.