これの逆Ver.です<br><a href="https://www.nicovideo.jp/watch/sm45674417" target="_blank" rel="noopener nofollow">https://www.nicovideo.jp/watch/sm45674417</a><br><br>原曲「テトリス/重音テトSV」<br><a href="https://www.nicovideo.jp/watch/sm44301514" target="_blank" rel="noopener nofollow">https://www.nicovideo.jp/watch/sm44301514</a>
