Kazuichi Arai

Height: 193 cm Arai Kazuichi is the temporary homeroom teacher for the gangs class. He is nicknamed Pin and always is called that way except Sawako who obeys the formalities and still calls him Araisensei. The previous homeroom teacher had been said to be sick after he made Sawako do his work during the summer holidays. He is a great fan of baseball as well as the school baseball teams coach. He used to be part of Kazehayas fathers league team so he has known Shouta since when he was young. He had once said that he likes to interrupt people. He nicknames Kazehaya and Sawakos foundbesidetheriver puppy Pedro Martinez.