Kang Daniel as Wi Seung Hyun
Chae Soo Bin as Go Eun Gang
Park Yoo Na as Ki Han Na
Min Do Hee as Woo Joo Young
Lee Shin Young as Kim Tak
Kim Woo Seok as Seo Beom Joo
Park Sung Joon as Yoo Dae Il
Cheon Young Min as Shin Ah Ri

Supporting Cast

Kim Sang Ho as Cha Yoo Gon [Police university professor]
Son Chang Min as Wi Ki Yong [Wi Seung Hyun’s father]
Ji Soo Won as Oh Sook Ja [Wi Seung Hyun’s mother]
Lee Moon Shik as Go Yang Chul [Go Eun Gang’s father]
Jung Young Joo as Lee Hee Sook [Go Eun Gang’s mother]
Seo Yi Sook as Kim Soon Young [Police university dean]
Son So Mang as Go Mi Gang
Park Yeon Woo as Kang Joo Chan
Jung Soo Bin as Baek Seon Yoo
Lee Joon Woo as Uhm Hyuk
Kim Yool Ho as Choo Yi Sa
Won Hyung Hoon as Yoon Seong Ho
Kim Seung Ho as Pyo Hyun Seok [Head of PR team]
Park Ji Hoon as [Delinquent]

Cameo

Shin Ye Eun
Sa Kang as [Han Na’s mother]
Kwak Shi Yang
Do Ye Chan