二酸化炭素はCO216,366 Views SingersKotonoha Akane (VOICEROID)Other Voice SynthesizerKotonoha Aoi (VOICEROID)Other Voice SynthesizerProducersemicolonProducerViews BreakdownNiconico10K ViewsYouTube6.2K ViewsDaily Views64/1164/12124/13354/14294/1544/1664/17VideorefreshRefresh Song DataListenYouTubeNiconicoVocaDB
