They were set to release their first "best of" compilation album, "Immortal", and a live DVD of their Shibuya C.C. Lemon Hall performance on December 16, but the release date was pushed back to December 29. "Immortal" was then released in the United States on April 20, 2010 through Maru Music. During January 2010, the band began recording for a new single. At an instore event during this month, Karyu and Zero briefly and ambiguously told fans that the single would be "dance style". The new single was titled "Love Is Dead" and was released on April 14, 2010.