Tokuma de Yaru

At a prestigious girls' high school, two twin students experience the start of a series of suicides during the second semester following summer break. Around the same time, a string of unexplained suicides occurs among the friends of a video store employee named Tokuma. Each day, another individual dies by suicide without fail. The situation raises questions about whether these are genuine suicides or a series of murders. Tokuma, along with his coworker Shingo and the twin sisters, investigates the circumstances behind these deaths.