Kouichi Sakakibara

Kouichi Sakakibara is a 15-year-old boy whose enrollment in Class 3-3 at Yomiyama North Middle School was delayed due to a prolonged hospital stay. Ignoring his classmates' stern warnings, he boldly reaches out to Mei Misaki—a girl the entire class pretends does not exist—driven by an irresistible urge to uncover the truth. This fateful decision pulls him headlong into the dreaded 'Calamity' that has haunted the class for years. As tragic and unexplained deaths begin to mount, Kouichi remains composed and analytical, working alongside his allies to piece together the puzzle and ultimately break the curse, cementing his role as the linchpin of the entire mystery.