Kurôzu-cho, a small fogbound town on the coast of Japan, is cursed. According to Shuichi Saito, the withdrawn boyfriend of teenager Kirie Goshima, their town is haunted not by a person or being but by a pattern...

As a Saint Knight, I was lost and captured in an encounter with a bloodsucking species. "Em, let you die? In your dreams! Accept my first embrace. In the future, we're gonna get along well. Oh~, my dear...