You cannot write about Lovely Runner without mentioning the music. Because the male lead is an idol, the OST is diegetic—meaning the characters actually sing the songs.
Byeon Woo-seok and Kim Hye-yoon have been praised for their electric on-screen chemistry. Byeon (known for 20th Century Girl ) brings both raw emotional depth as the troubled idol and boyish charm as the younger Sun-jae. Kim Hye-yoon (known for Extraordinary You ) delivers a bubbly yet poignant performance, making Sol a relatable and endearing protagonist. 2. A Unique Take on Time Travel wetv lovely runner