Opera! Space Opera!2,534,639 Views SingersKagamine LenVocaloidTenma TsukasaProject SEKAIOtori EmuProject SEKAIKusanagi NeneProject SEKAIKamishiro RuiProject SEKAIProducerNayutalieNProducerViews BreakdownYouTube2.4M ViewsNiconico146K ViewsDaily Views5.4K11/165.7K11/175.9K11/185.1K11/195K11/205.4K11/215.6K11/22VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB