Based on a horror/mystery novel by Ayatsuji Yukito, originally serialised in the Yasei Jidai magazine.26 years ago, in a third-year classroom of a middle school, there was a student named Misaki. As an honours student, also good at sports, the charming guy was popular with his classmates. When he suddenly died, his classmates decided to carry on as if he was still alive until graduation. Then, in the spring of 1998, a boy named Sakakibara Kouichi transfers to that class, and he grows suspicious of the fearful atmosphere in that classroom. In particular, there is a beautiful, aloof girl named Misaki Mei who wears an eyepatch and is always alone drawing pictures.