The first song is the background music when Jae Yeol and Hae Soo are kissing. It is the first OST of this drama from EXOchen's "Best Luck", and the second song is when Hae Soo is lying on the ground sleeping. The interlude is "You are my best friend" from The once, and the third interlude while lying on the ground sleeping is "You are my best friend" from The once. The fourth song played on Jae Yeol’s phone is Heavy by Killin Time Band. The fifth song played on Jae Yeol’s radio was Ship and the Globe by Kae Sun.

Hope to adopt