m/lue. has released a new song "Ghost" for the first time in two years. The song is filled with contradictory feelings of people, important thoughts about people and places, and hope that shines brightly in the midst of despair. Drums, Percussion were done by Fuga Akase. Synthesizer, mixing, and mastering were done by beja. They are both members of Fuyuha/Khamai Leon and support other artists.
A one-cut music video directed by Kazuhiro Yasuda, a photographer and photo researcher, was also shot and contains m/lue.'s strong desire to speak to listeners.