Former U-KISS member Allen Kibum made his Korean debut with “Longing” and released the music video through his agency’s official YouTube channel. He also revealed that he still loves his U-KISS members.

“Longing” is about remembering a love after it ends. Allen Kibum explained the meaning of the song. “I have memories of the times I spent with U-KISS, and although there were some difficult times I still love them.”

The music video is more of a behind the scenes look as Allen Kibum travels from Korean to Japan.

Allen Kibum debuted in the group XING in 2006 and then became a member of U-KISS in 2008. He then left U-KISS in 2011 and changed his name to Allen Kibum while focusing primarily on Japan.