This Happiness420,489 Views SingersHatsune MikuVocaloidMegurine LukaVocaloidGUMIVocaloidKamui GakupoVocaloidKagamine RinVocaloidKagamine LenVocaloidKAITOVocaloidMEIKOVocaloidIAVocaloidMAYUVocaloidProducerFuwariPProducerViews BreakdownNiconico263K ViewsYouTube158K ViewsDaily Views5211/176911/18011/191711/2011211/215511/227011/23VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB