ピアノ×ボカロは美しい本家様 https://youtu.be/91R2hdV_-aQSeakaitwtwitter: https://twitter.com/seakaikai?t=2bZHtvpMaOAKxiOJdpqxPg&s=09youtube: https://youtube.com/channel/UCP1gBp86c4SaxVVkWvwJjPwTikTok tiktok.com/@seakaikainiconico https://nico.ms/user/124081494
http://www.nicovideo.jp/watch/sm42575636
