SEE ALSO: Korean netizens react to Apink's Bomi and Black Eyed Pilseung's Rado's 8-year relationship

"Beautiful Days" is composed by Kim Jong Ik and written by Lee Joo Yeop, and is a a remake of Choi Baek Ho's song of the same title which fit so well with the drama's theme that the staff selected it prior to the start of the drama. The song expresses the theme of time passing by and the innocent love once forgotten being brought back to life later on.

Soothe your hearts by listening to Seo Young Eun's "Beautiful Days"!