元ネタ→ https://youtu.be/8G5UJIrG2Jk らっだぁYouTube: https://www.youtube.com/channel/UClNdVSK1uy2xFHTaXZYXopw/videosTwitter : https://twitter.com/radaokunTwitter : https://twitter.com/NgaNga_Rega
http://www.nicovideo.jp/watch/sm39483271