Yoon Ji Sung released the highlight medley for 'Dear Diary.' 

The special album for the fans before Yoon Ji Sung's military enlistment contains 5 songs titled "Eyes On the Side," "Your Page," "My Day," "Greetings," and "Miracle." 

Yoon Ji Sung's soft vocals stand out in each of the tracks. You can pre-listen to them in the clip above. 

The full release will be on April 25.