"W: Two Worlds" is a South Korean television series that aired in 2016. The show follows the story of Oh Yeon-joo, a cardiothoracic surgeon who finds herself drawn into the web of a webtoon, a digital comic, created by her father, Oh Sung-moo. In this unique narrative, she meets Kang Chul, the main character of the webtoon, who is unaware of his fictional existence. As Yeon-joo navigates between the real world and the webtoon, she becomes entangled in a series of events that challenge the boundaries of reality. The series explores themes of love, fate, and the power of storytelling, blending elements of romance, fantasy, and suspense.