Masako Saeki

Masako Saeki is an art teacher at Yatora Yaguchi's high school and the advisor of the Art Club who also runs Art Courses outside of school for children. Saeki-sensei is the adviser of the art club. She is an elderly female teacher with a gentle demeanor and often seen with a smile. She is a vigilant type of person. She is one of the adults who guides the troubled Yatora. Gives the right amount of criticisms to students that are motivated, while keeping things fun for those that aren't.