I'm under your bed

The film is adapted from the novel of the same name by Kei Oishi, a writer who specializes in taboo subjects. It tells the story of Naoto Mitsui, who is not taken seriously by anyone, and the girl who first called his name when he was a student. He meets again after eleven years, but the other person seems to be a different person. Mitsui hid under her bed in order to monitor her, and the madness of love accelerated his rampage.