26 years ago, something terrible happened in a middle school’s third year classroom. A popular, talented student named Misaki suddenly died, and the ramifications of that incident have caused each third year class since then to live in fear. It is now 1998, and Kouichi Sakakibara has just transferred into the notorious classroom, curious about the mysterious secret that his peers are hiding from him. He’s drawn to one enigmatic girl named Mei Misaki, a quiet student who wears an eye patch and warns him about getting involved with her, and continues to seek her out against the pleas of his classmates. And that’s when people begin to violently die...