2023 release. Last year Babymetal were "sealed" from the world after a successful 10-year journey. Earlier this year, The Other One restoration project began to recover the Babymetal we never knew existed within a virtual world called the Metalverse. The concept album reveals the other side of the Babymetal story that no one knew existed. A total of 10 songs have been discovered within The Other One restoration project, in which each song represents each theme of the 10 parallel worlds that seem to exist.