On September 4th, Lee Han Gyul and Nam Do-hyon (H&D) raised their expectations for a comeback by posting a surprise image with the phrase 'Last Special Album' along with two empty chairs on the official SNS. The phrase 'You CAN MAKE A NEW GROUP WITH US.'

Lee Han Gyul and Nam Do-hyon (H&D)’s goodbye special album title song is a self-composed song by music genius Nam Do-hyon. It is an emotional hip-hop R&B song that expresses the feelings after separation by comparing them to an umbrella on a rainy day. Is going to visit fans with a different concept.