Good-bye, Katharsister29,386 Views SingerIAVocaloidProducerNatsuyama YotsugiProducerViews BreakdownYouTube24K ViewsNiconico5.4K ViewsDaily Views6412/175812/182312/191812/2014512/215712/227212/23VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB