空澄セナ https://www.youtube.com/channel/UCF_U2GCKHvDz52jWdizppIA 花芽なずな https://www.youtube.com/channel/UCiMG6VdScBabPhJ1ZtaVmbw 元動画: https://www.youtube.com/watch?v=GsK7_sbjKzo
http://www.nicovideo.jp/watch/sm37595221