Takumi, a high school student who lives in isolation and shuns real-life objects, is faced with a terrorizing series of murders in his town. One day, while chatting online, he receives an anonymous message with a URL leading to a creepy blog predicting the next murder, which unfortunately comes true. Struggling with schizophrenia, Takumi's life spirals into chaos as he endures intense hallucinations, trapped in the life of a hikkikomori. Amid the chaos, he encounters a group of sword-wielding anime girls who seem to be losing control.