Toshio Koumura

Serving as Tomoya’s first-year homeroom teacher, this dedicated educator once possessed a much more energetic persona. While his disciplined teaching style previously transformed unruly students at an engineering school, his expertise feels underutilized at his current prestigious institution. After facilitating the pivotal meeting between Tomoya and Youhei, he eventually retires, only to reappear later to help organize a heartfelt, mock graduation ceremony for Nagisa. His history also includes a past friendship with Kouko Ibuki.