I Wish I Had a Shatterproof Heart4,905,304 Views SingersSF-A2 Codename mikiVocaloidIAVocaloidProducerIshifuroProducerViews BreakdownYouTube4.3M ViewsNiconico558K ViewsDaily Views09/2909/3062510/017K10/022.7K10/0337010/041.4K10/05VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB