On September 13th, it was revealed that Chae Dong Ha's MV for his upcoming title song "One Day is Crazy" was leaked. Before the release of his mini-album, 'D-Day', there were worries that songs from the album would be leaked - but nobody anticipated that the entire music video would be leaked first. In the past, there were cases where single songs or parts of the music video were leaked, however it's a very serious issue when an entire album or a full-length music video is made public before the official release. Cha Dong Ha's management company is investigating the root of the leak. On the other hand, 'D-day' will be released on the 16th, and Chae Dong Ha will be making a comeback on M!Countdown.