Seijirou Sugishita

Seijirou Sugishita (杉下 清次郎 Sugishita Seijirō) is Jun'ichi Nagase's teacher. While strict with regards to academics, he has a rather eccentric personality, especially towards Jun'ichi.

Trivia

 * The name Seijirou means "clear, pure, clean" (清) (sei), "next" (次) (ji) and "son" (郎) (rou).