Worst Regret1,000,502 Views Singersv4 flowerVocaloidV4 GUMI (Power)VocaloidProduceryoumanProducerViews BreakdownYouTube582K ViewsNiconico419K ViewsDaily Views1.3K12/171.6K12/181.5K12/191.3K12/201.5K12/211.5K12/221.3K12/23VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB