Yuuko Katori  

, 香取 夕子

Yūko Katori is a teacher who taught English and coached the soccer team before Matsushita. She's known for being somewhat airheaded but deeply caring about her students. When she noticed that Shō was determined to become one of the best varsity soccer players, she did everything in her power to support him and his teammates by assisting with their retreat, even though she wasn't very knowledgeable about soccer. At some point, Kō attempted to make advances on her, which may or may not have been successful. Shigeki refers to her as Ane-san (Big Sister).