Rosarium39,364 Views SingersKoharu Rikka (Unknown)Synthesizer VNatsuki KarinSynthesizer VProducerKazawaraProducerViews BreakdownNiconico30K ViewsYouTube9.3K ViewsDaily Views512/173012/18012/19612/20512/213012/22612/23VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB