Worst Regret1,183,439 Views Singersv4 flowerVocaloidV4 GUMI (Power)VocaloidProduceryoumanProducerViews BreakdownYouTube717K ViewsNiconico467K ViewsDaily Views1.2M4/211.4K4/229634/231.3K4/241.2K4/251.2K4/261.3K4/27VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB