戦勝パレードの練習?
https://video.twimg.com/ext_tw_video/1523251061229772801/pu/vid/540x960/A5p08aPYKU_ejfKA.mp4
https://twitter.com/TpyxaNews/status/1523251110642741248
https://twitter.com/5chan_nel (5ch newer account)