Welcome To SINGULARITY, a parallel world which is constantly reborn and dying because of Eternal Strings running wrong。Three Origin Elf maids as the master of this world hope a hero to save it。 Swipe instruments and collect them to produce beautiful tunes, which are the key to repairing Eternal Strings. Then The Elf will appreciate your efforts and show a graceful dancing。 Answer the call and start swapping for endless fun.