The academic head of Higashi Junior High-school, who constantly tries to discipline Ikki and his team. He has a soft spot for Tomita Mari, one of his first students.
Masaya Orihara is a strict teacher who was the teacher of Tomita Mari when she was a student. It's hinted that he used to be that he once sported ATs himself, he also possesses a 3rd degree black belt in karate and a second degree belt in judo past. He has soft spot for Tomita Mari, one of his first students, who he constantly encourages to be stronger and more stern with her own students.