Firefly8,433 Views SingerMegurine Luka V4X (Unknown)VocaloidProducerregulusProducerViews BreakdownYouTube5.8K ViewsNiconico2.6K ViewsDaily Views629/2909/30310/01010/02110/034210/04510/05VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB