Risky Romance

Risky Romance is a South Korean television series starring Ji Hyun-woo, Lee Si-young, Kim Jin-yeop and Yoon Joo-hee. It aired on MBC from July 23 to September 17, 2018 on Mondays and Tuesdays at 22:00 (KST).

Synopsis
The romance story of an excellent neurosurgeon and a determined endocrinologist. Han Seung-joo (Ji Hyun-woo) used to be a warm and an understanding person, but after the death of a close friend, he became a hot-headed person and merciless towards others. After listening to the rumors of how Seung-joo has turned into a completely different person, Joo In-ah (Lee Si-young) can't help but feel intrigued towards him, believing that all of that temper is because of hormones. She is determined to make him as her patient, and run a blood test on him to check on his hormone levels. From then, their rivalry begins.

Main

 * Ji Hyun-woo as Han Seung-joo
 * A talented neurosurgeon with an extraordinary memory and a logical approach to things. However, his feisty personality and competitiveness makes him unstoppable when he fixates on something.


 * Lee Si-young as Joo In-ah
 * A hormone-obsessed woman who believes that life is controlled entirely by them.


 * Kim Jin-yeop as Cha Jae-hwan
 * Son of the hospital director. A neurosurgeon with talent, wealth and looks.


 * Yoon Joo-hee as Joo Se-ra
 * Joo In-ah's stepsister. A TV announcer who is pursuing Cha Jae-hwan.

Supporting

 * Sunwoo Sun as Jang Ji-yeon
 * Jang Se-hyun as Jung Hyun-woo
 * Choi Ryung as Yoo Sang-bum
 * Bae Seul-ki as Lee Jin-kyung
 * Shin Won-ho as Choi Jae-seung
 * In A as Lee Mi-woon
 * Jeon No-min as Cha Jung-tae
 * Cha Jae-hwan's father, who is the head of the same hospital Joo In-ah and Han Seung-joo are working for.


 * Choi Sung-min as Min-ki
 * Park Han-sol as Jang Han-ah
 * Son Jong-bum as Park Il-won

Production

 * The first script reading took place on May 3, 2018 at MBC Broadcasting Station in Sangam, South Korea.
 * The drama reunites Ji Hyun-woo with Lee Si-young who previously starred together in Becoming a Billionaire.
 * Lee Yo-won was offered the female lead but declined.
 * When the series was still in development at MBC, it had the working title Emotional Technology/Technology of Emotions.

Ratings

 * In the table below, the blue numbers represent the lowest ratings and the red numbers represent the highest ratings.
 * NR denotes that the drama did not rank in the top 20 daily programs on that date.
 * N/A denotes that the rating is not known.


 * Episodes 17 & 18 did not air on August 20 due to the coverage of the 2018 Asian Games.
 * Episodes 19 & 20 did not air on August 27 due to the coverage of the 2018 Asian Games.