Esper Esper2,562,452 Views SingerHatsune MikuVocaloidProducerNayutalieNProducerViews BreakdownYouTube2.3M ViewsNiconico254K ViewsDaily Views1.9K3/312.2K4/012.4K4/022.1K4/032.2K4/042.1K4/052.2K4/06VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB