Shintarou Tsushima

Shintarō Tsushima (津島 信太郎 Tsushima Shintarō)

An Administration Bureau member and a school teacher at Ashiharabashi High School, which both Kei, Haruki and their friends attend. He serves as the middle man between the Bureau and the Service Club, giving out tasks by the Bureau to the Service Club and only providing some hints to Kei to help solve the tasks.