Know-it-All77,154 Views SingerOtomachi Una (Unknown)VocaloidProducerKisenonProducerViews BreakdownYouTube54K ViewsNiconico23K ViewsDaily Views04/1904/2004/2104/2204/2304/2477K4/25VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB