せんせい、y https://youtube.com/channel/UC6AAf33HUputkU1omiG-XhA?si=NwzVIm1Tpt_GzmJFx https://x.com/krki_iii?s=21&t=pkwnwTxvXS3UBidleVgTkg
http://www.nicovideo.jp/watch/sm45210628
