Characters played by Jang Na-ra
Ma Jin-joo
Characters played by Ho Joon Son
Choi Ban-do
Characters played by Jang Ki-Yong
Jung Nam Gil [Jin Joo's sunbae]
Characters played by Jeong-min Heo
An Jae Woo [Ban Do's friend]
Characters played by Bo-reum Han
Yoon Bo Reum [Jin Joo's friend]
Characters played by Yi-Kyeong Lee
Go Dok Jae [Ban Do's friend]
Characters played by Kim Mi-Kyung
Go Eun Sook [Jin Joo's mother]
Characters played by Byung-Joon Lee
Ma Pan Seok [Jin Joo's father]
Characters played by Kim Byeong-Ok
Choi Ki Il [Ban Do's father]
Characters played by Ko Bo-Gyeol
Min Seo Yeong [Ban Do's first love]
Characters played by Hye-Jung Cho
Cheon Seol [Jin Joo's friend]
Characters played by Ji Kyu Im
Park Hyun-suk
Characters played by Yang Dae-Hyeok
History department senior
Characters played by Ryun Jo
Kang Kyung-sook
Characters played by Min Ji
Jin-joo's sister