EXO member and actor D.O. (Doh Kyung-soo) has released a new song, "Darling." His agency Blitzway Music said on the 12th that D.O. released "Darling" on the 11th. "Darling" is a ballad about the happiness of simply looking at someone you love. D.O. said, "I hope you listen to this song when you want to feel warm emotions or need a moment of ease," adding, "I hope the warm heart in the song comes across well."