Composer
Director
Executive Producer
Screenwriter
Main Role
-
Hyun BinYu Jin WooMain Role -
Park Shin Hye Main Role
Support Role
-
Park HoonCha Hyun Suk [CEO of Neword Soft]Support Role -
Lee Seung JoonPark Sun Ho [Co-Founder of J One]Support Role -
Min Jin WoongSeo Jung Hoon [Jin Woo's secretary]Support Role -
Kim Eui SungCha Byung Jun [Hyung Suk's father]Support Role -
Kim Yong RimO Yeong Sim [Hui Ju's grandmother]Support Role -
Lee ReJung Min Joo [Hee Joo's younger sister]Support Role -
Park Chan YeolJung Se Joo [Hee Joo's younger brother]Support Role -
Lee Hak JooKim Sang Beom [Hee Joo's friend]Support Role -
Jo Hyun ChulChoi Yang Ju [Head of R&D Center Research Team]Support Role -
Lee Shi WonLee Soo Jin [Jin Woo's first ex-wife & Hyung Suk's wife]Support Role -
Han Bo ReumGo Yoo Ra [Jin Woo's second wife]Support Role -
Park Jin UNoh Yeong Joon [Yoo Ra's manager]Support Role -
Lee Jae WookMarco Han [Programmer / Hacker] (Ep. 8-9, 13)Support Role
Guest Role
-
Park Hae Soo[Agent A] (Ep. 1, 2, 4, 8)Guest Role -
Kim Do Yeon[Tenant at Bonita Hostel/Medical Student] (Ep. 2, 3, 5)Guest Role -
Ryu AbelLee Soo Kyung [Soo Jin's sister] (Ep. 2, 4, 7)Guest Role -
Jung Min Sung[Hee Joo's father] (Ep. 3)Guest Role -
Choi Yoo Song[Hee Joo's mother] (Ep. 3)Guest Role -
Lee Chae YoonJung Hee Joo [Young] (Ep. 3)Guest Role -
Kim Joon EuiJung Se Joo [Young] (Ep. 3)Guest Role -
Park Chae HeeJung Min Joo [Young] (Ep. 3)Guest Role -
Lee Do Hyun[Korean Consulate representative] (Ep. 4-5)Guest Role -
Kang Ro Chae[J One Employee] (Ep. 4, 8)Guest Role -
Kim Hyun Mok[J One Employee] (Ep. 7, 10, 13, 16)Guest Role -
Park Seul KiHerself [Reporter] (Ep. 7, 16)Guest Role -
Hwang Bo Mi[Anchorwoman] (Ep.7, 16)Guest Role -
Son Kyung WonOh Yeong Sik [J One Director] (Ep. 11-13, 15-16)Guest Role -
Song Young KyuChoi Jung Hyuk [Doctor] (Ep.15)Guest Role -
Han Da Sol[Gamer] (Ep. 16)Guest Role -
Yoo Young Bin[Researcher]Guest Role -
Kim Joo Young[University student]Guest Role -
Park Sang Hwi[Granada Branch Officer]Guest Role -
Park Jong JinHimselfGuest Role -
Eom Seong SeopHimselfGuest Role -
Moon Jung Gi Guest Role -
Carla Avila Guest Role -
Amanda Lethielle[Employee] (Ep. 3)Guest Role
Bit part
-
Hong Boo Hyang Bit part
Unknown
-
Bret Allan Lindquist Unknown -
Yoon Jae Hyun Unknown
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