Omoigawa Ryouta

His favourite food: Meat and potatoes, stir-fried vegetables.
His disliked food: Enoki Mushrooms.
The subject he lectures: Japanese Language.

The only full-time teacher at Konoegahara Gakuen, and Hiroto's class Homeroom teacher. Instead of appearing personally at the school, he talks to the students and school staff through a weird low polygon hologram of his face. He is a married man with kid(s).