Yoon Ji Sung has dropped two concept photos for his upcoming digital single.

For his winter comeback, Yoon Ji Sung has prepared his 2nd digital single titled "December. 24." In these images, the solo singer looks laid back in white. Meanwhile, Yoon Ji Sung has recently been active on variety programs and has also opened his YouTube channel.

The new single will be released on December 5 at 6 PM KST.