My Only One is a South Korean television series starring Choi Soo-jong, Uee, Lee Jang-woo, Yoon Jin-yi, Jung Eun-woo, Na Hye-mi, and Park Sung-hoon. The series aired on KBS2 every Saturday and Sunday from 19:55 to 21:15 (KST) from September 15, 2018, to March 17, 2019.

Lee Jang-woo is a South Korean actor and singer. He is best known for his roles in the television series Glory Jane, I Do, I Do, My Only One and Homemade Love Story. Lee also became popular after being paired with Ham Eun-jung in the third season of fictional marriage reality show We Got Married.