Naoki Watarase

High school teacher and homeroom teacher for Kadode, Ouran, and others. Wears rimmed glasses and has a listless look. While he has a frank personality that mixes with students as if they are friends, he also has a cynical side. Kadode and other female students had a fondness for him, but he responded as an adult. He had been in a relationship with Hikari since their student days out of inertia, but after Kadode and the others' graduation ceremony, he stated, "We broke up the other day."