１日目はこちら https://www.youtube.com/watch?v=JrqQ6fEEkPs&ab_channel=NIRAnira%E7%99%92%E3%81%97%E3%81%A8%E3%82%B2%E3%83%BC%E3%83%A0%E3%81%A8%E3%82%B3%E3%83%AC%E3%82%AF%E3%82%B7%E3%83%A7%E3%83%B3
http://www.nicovideo.jp/watch/sm42629815
