2013's original serial in the Junior Champion of the Monthly from 2000 to 2016 is a youth comedy of the Baseball Department, which describes the joyful and sad real daily life of high school caddies. In the movie, Tieping Kuroda, the hero, bid farewell to the life of the baseball department in middle school, and dyed his brown hair to enter school with the goal of making his debut in high school. Even though I dreamed of a rosy high school life, I was persuaded by my gentle seniors and accidentally joined the baseball department. However, as soon as the time for joining the Ministry temporarily ended, the attitude of the seniors suddenly changed.