暗い月曜日4,797 Views SingersMEIKOVocaloidHiyama KiyoteruVocaloidMidorizaki KasumiCeVIO AIProducerkeystoneProducerViews BreakdownNiconico4.8K ViewsDaily Views04/2204/2304/2404/2514/2604/2704/28refreshRefresh Song DataListenNiconicoVocaDB