はじめてのバラード本家:R Sound Design様YouTube: https://www.youtube.com/watch?v=bUbOc97FpUAniconico : https://www.nicovideo.jp/watch/sm32852412Mix :おすず様YouTube: https://youtube.com/channel/UCMYKD1cXTa1c9oHWPRGHeiATwitter : https://twitter.com/osuzu1212 歌唱:糸街Twitter : https://twitter.com/Itomachi2222Vtuber (まいとり) https://www.youtube.com/channel/UC9pMxEwyyNEn05hrqBVUm7A