Good-bye, Katharsister26,267 Views SingerIAVocaloidProducerNatsuyama YotsugiProducerViews BreakdownYouTube22K ViewsNiconico4.2K ViewsDaily Views6611/026311/036711/042411/0511511/067811/075111/08VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB