Opera! Space Opera!3,321,140 Views SingersKagamine LenVocaloidTenma TsukasaProject SEKAIOtori EmuProject SEKAIKusanagi NeneProject SEKAIKamishiro RuiProject SEKAIProducerNayutalieNProducerViews BreakdownYouTube3.1M ViewsNiconico221K ViewsDaily Views-3.3M4/203.3M4/214.1K4/223K4/234.1K4/244K4/253.6K4/26VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB