山形宣言

https://img.cdn.nimg.jp/s/nicovideo/thumbnails/37796713/37796713.89238496.original/r1280x720l?key=e1476983ca868d0994209650398cf5cf818f519eeed78f87587c98457349f6ab#.png https://www.nicovideo.jp/watch/sm37796713