Episode 1 S01 E01

Seo In-guk (as Nam Han-jun) Oh Yeon-seo (as Han Jae-hui) Kwak Si-yang (as Gong Soo-chul) Kang Mi-na (as Nam Hye-jun) Kwon Soo-hyun (as Cha Do-won) Jeong Man-sik (as Jang Du-jin) Baek Seo-hoo (as Jo Na Dan) Jung Eun-pyo (as Kim Cheol Geun) Hwang Woo-seul-hye (as Lee Min Kyung) Park Hae-in (as Lee Ji Eun) Heo Jae-ho (as Kim Sang Hyub) Baek Seung-ik (as Park Jin Sang) Jeong Da-eun (as Aunt Lim) Park Jeong-hak (as Park Jeong Hyeon) Kwon Hyuk (as Jung Cheong Gi) Won Hyun-jun (as Goo Tae Soo) Kim Min-seol (as Kang Eun Hye)

based on novel or book fraud investigation prosecutor barista slight romance