Sasayabu

Appears in "Nadeko Medusa" as a middle school teacher of Nadeko, who is in charge of class 2-2 that Nadeko belongs to. In "Nadeko Snake," due to the "charm" spread by Sasayabu, he fails to address the friction within the class caused by it and irresponsibly dumps the problem-solving on Nadeko, the class president. He is characterized by a lack of responsibility, and when Nadeko, who had drastically changed, furiously berated him, he merely panicked.