Flat World1,541 Views SingerHatsune Miku V4X (Sweet)VocaloidProducerMaiku TachibanaProducerViews BreakdownYouTube1.3K ViewsNiconico193 ViewsDaily Views012/17512/18012/19312/20012/21012/22412/23VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB