Cho Seung-yeon

as Apt. 702 Resident

as Yoon Jeong-ki

as Seong In-jae

as Wu Cheol-yong

as dean of academic affairs (Yu-seong Tech)

as Kwak Se-hwan

as Chun Soo-beom

as Kyeong Geun-jik

as Bae PD / Bae Cheol-ho

as Jin Chul-joong

as Oh Hyun-chul

as Ju Jeon

as King Sun-Jo

as No Young-Seok

as Police Station Section Head Chief