Naruko Yokoshima 横島 ナルコ

A teacher at Ōsai Academy, who happens to be the advisor of the student council. She, like Aria and Shino, often has perverted thoughts on her mind, and apparently has a thing for younger guys (and the male students of the school are often targeted by her). She is often portrayed as unreliable and useless, from an educator's point of view.