A Cieln that was developed during the course of Ar nosurge: Ode to an Unborn Star's events, which was created through the deciphering Undou Quinquem did of Professor Clacket Palmium's legacy: the Surge Concerto Terminal itself, and the Tron he gave to his disciple and surrogate daughter Sarly Planck. This Song was developed in order to prevent the formation of the Maternal Overseer, but as it was impossible to stop its creation, it remained with only one purpose: weakening it. However, the does said weakening in a indirect manner that could be called a gimmick.