Kim Jae Hwan has dropped a lyrics teaser for 'The Letter'.

In this teaser, a dead tree in the winter season is accompanied by the lyrics: "The darkened feeling of missing you, I wonder if you know / It was a nice day full of sunshine when I walked with you / So all the windy moments remain as memory / I still look for you from that day".

Kim Jae Hwan's 4th mini album 'The Letter' will be released on December 27 at 6 PM KST.