The song "Only One" by Soulmate (소울메이트) tells the story of a couple who are drifting apart, despite the fact that they were each other's only love. The lyrics describe the awkward and cold moments of their interactions, as well as the pain of saying goodbye. The protagonist struggles with letting go and trying to move on, even though they know deep down that the other person is the only one for them. The song reflects on the bittersweet emotions of love and heartbreak, and how difficult it can be to part ways with someone who was once so important in their life. The chorus repeats the sentiment that no matter what happens, the other person will always be the only one for them. The song captures the longing, heartache, and eventual acceptance of the end of a relationship.
