Toshio Koumura

Toshio Koumura is a language teacher at Tomoya's school and serves as Tomoya's homeroom teacher during his first year. Earlier in his career he taught at an engineering school known for delinquents, where his strict but enthusiastic approach helped many students change for the better. At Tomoya's prestigious school, he identifies Tomoya and Youhei as students who may need similar guidance and arranges for them to meet.