This document outlines a proposed thriller film set in a Japanese-style high school. Every 5 years, something kills or drives students in classroom 3-1 insane, with a maximum of 12 deaths per year. A student survivor records the events in a diary. The film follows the remaining students as they work to figure out what is causing the events. It will include elements of horror and subtle romance to appeal to different audiences. The characters, costumes, lighting, and cinematography are designed to create confusion and disorientation for viewers as the events unfold.