Main Characters Hajime Aono 24 main appearances Ritsuko Akine 23 main appearances Nao Saeki 20 main appearances Haru Kozakura 20 main appearances Sō Harada 15 main appearances Ichirō Yamada 14 main appearances Hajime's Mother 14 main appearances Chika Yonezawa 13 main appearances Hiroaki Ayukawa 12 main appearances Yō Hatori 11 main appearances Mari Tateishi 11 main appearances Ryūjin Aono 8 main appearances Takeda-Sensei 8 main appearances Shizuka Tachibana 7 main appearances Osamu Shibata 4 main appearances