Sugino is an energetic boy with a love for baseball. He's a very happy and friendly person and gets along with his classmates well. Before he was transferred to Class-E, Sugino was a member of the school's baseball club. However, due to his relatively slow pitches frequently getting batted, he was removed from the regular line up of his club. Because he was moved down, he had no motivation to study and thus got moved to Class-E.