Hyde, Jekyll, Me

Gu Seo-jin (Hyun Bin), is a third-generation chaebol who runs the theme park Wonder Land. He seemingly has everything — looks, brains, and fortune. He is also in line to become the next CEO of Wonder Group, the conglomerate his family owns, though his cousin Ryu Seung-yeon (Han Sang-jin), who oversees Wonder Hotel is his rival for the position. But Seo-jin has dissociative identity disorder. Whenever his heart rate exceeds 150, another personality emerges, and unlike Seo-jin's usual cold, cynical and ruthless self, Robin is kind, gentle and has a savior complex. This split personality began 15 years ago, and Seo-jin's doctor Kang Hee-ae believes that Robin is a manifestation of his guilt regarding a traumatic incident then. Because of this, Seo-jin avoids anything that might cause him to have a strong physical or emotional reaction which could trigger Robin's reappearance, even if that means shutting himself away from the world and eschewing any meaningful relationships. [cont.][About:]Hyde Jekyll, Me is a 2015 South Korean television series starring Hyun Bin and Han Ji-min. It is based on Lee Choong-ho's webtoon Dr. Jekyll Is Mr. Hyde, which gave a romantic comedy spin on the literary character. The series aired on SBS from January 21 to March 26, 2015 on Wednesdays and Thursdays at 21:55 for 20 episodes.[Source: Wikipedia]