ポラリスに届く手紙3,175 Views SingerSEKAICeVIO AIProducerNoaProducerViews BreakdownNiconico2.2K ViewsYouTube990 ViewsDaily Views111/01211/02111/03111/04211/05511/06011/07VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB