Answer
In the Japanese anime series Hell Teacher Nūbē, Okiayu plays the role of Meisuke Nueno. Nueno is a character who is a teacher at the school where the main character, Nūbē, is a student. Nueno is a strict and demanding teacher, but he is also a kind and caring person. He is a mentor to Nūbē and helps him to learn and grow as a person.