Main Characters Choi Dae Hyun 16 main appearances Jung Saet Byul 16 main appearances Yoo Yun Joo 16 main appearances Jung Eun Byul 14 main appearances Jo Seung Joon 13 main appearances
Recurring Guest Characters Kong Boon Hee 16 guest appearances Han Dal Sik 16 guest appearances Hwang Geum Bi 16 guest appearances Choi Yong Pil 15 guest appearances Department Head Bae 14 guest appearances Cha Eun Jo 12 guest appearances Kwon Eui Chu 8 guest appearances Cha Ki Bok 6 guest appearances Bully group leader 1 guest appearances