Kenjiirou Tateyama

First appeared in Dead and Seek. A high school teacher, Momo’s homeroom teacher, and also Ayano's father. Provides both stern and kind guidance to Momo, who can’t come to school often due to idol activites. Even though he has lost his family in the past, he still continues to do his best in educating students.

(Source: Vocaloid Wikia)