堕落2,104 Views SingersHatsune MikuVocaloidMegurine LukaVocaloidKagamine LenVocaloidProducerEgi RiiseProducerViews BreakdownYouTube2K ViewsNiconico147 ViewsDaily Views011/01011/02011/03011/042.1K11/05011/06011/07VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB