Heijou Seijou Monochrome3,348 Views SingersKagamine Len Append (Power)VocaloidKagamine Len Append (Serious)VocaloidProducerSnowNoisePProducerViews BreakdownNiconico3.3K ViewsDaily Views012/17012/18012/19012/20012/21012/22012/23refreshRefresh Song DataListenNiconicoVocaDB