https://www.youtube.com/@mayoneru_chhttps://x.com/mayoneru_chhttps://www.tunecore.co.jp/artists/Ryo-Itsuma 普段の作品はこちら： https://www.nicovideo.jp/watch/sm43249413?ref=garage_share_other
http://www.nicovideo.jp/watch/sm46166489
