Firefly9,190 Views SingerMegurine Luka V4X (Unknown)VocaloidProducerregulusProducerViews BreakdownYouTube6.5K ViewsNiconico2.7K ViewsDaily Views4612/19512/20012/21012/22012/23212/24012/25VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB