SEE ALSO: Why Song Min Ho can't re-enlist as active duty soldier

G.O and Mir took part in composing and writing the track, which is a medium-tempo song that sets viewers up for the romance part of the story.

G.O shared, "I worked on this song to give off a vibe that suits the synopsis and fits as an ending theme of the film." Seung Ho commented, "After listening to the song, I felt that there were a lot of emotional parts to the point that it made me question whether or not this is a horror film OST, but since 'Girl Ghost Story' is not your average thriller and more of a emotional thriller, I think it fits well."

'Girl Ghost Story' is directed by Oh In Chun and portrays the story of In Soo (Kang Ha Neul) who has a sixth sense of seeing ghosts. He meets a mysterious female ghost (Kim So Eun) at his new school when his classmates start disappearing one by one.

'Girl Ghost Story' will premiere on July 3.