Appears in the story "The Case of Misaki and Noriko". Noriko is the school's P.E. teacher. During a talk with Misaki, she mentions that the mermaid's flesh myth has been around since her own days as a student, and reluctantly agrees to go hunt mermaids with Misaki. Noriko has been obsessed with Morita for a long time, and turns against Misaki during the hunt. Dejected that Misaki steals her prey, she refuses to eat the mermaid's flesh and turns into one at dawn.