「立方体」Design by sakuyoutube版: https://youtu.be/GF50cvIWQPw 折り紙: mylist/16345821 twitter: https://twitter.com/sakusaku858instagram: https://www.instagram.com/sakusaku858/Flickr: https://www.flickr.com/gp/122577187@N08/f745NT
http://www.nicovideo.jp/watch/sm30229013
