Shugo Daimon  

, 大門 秀悟

A well-known baseball coach who has won the Kōshien tournament twice and reached it several times was hired by Vice-Principal Shidō to improve Seishū's baseball team. He replaced Coach Maeno and brought his own players, making their existing team second string or low quality (which he often referred to as "cesspool"). When they lost in a rematch against the lower ranked teams, he was forced to resign along with Shidō. Currently, he is coaching Kurokoma Jitsugyō using the same strategy of buying talented players that he used at Seishū.