ボイパ対決7周年おめでとうございますソフィー: https://www.youtube.com/watch?v=9jWiJ9ic6lI&t=53sYouTube:https://www.youtube.com/watch?v=JSoAeN3P3ls&t=16sbilibili:https://www.bilibili.com/video/BV1P84y1c7Hd/
http://www.nicovideo.jp/watch/sm38684983
