https://www.nicovideo.jp/watch/sm3900435?ref=search_key_video&playlist=eyJ0eXBlIjoic2VhcmNoIiwiY29udGV4dCI6eyJrZXl3b3JkIjoiXHUzMGU0XHUzMGYzXHUzMGM3XHUzMGVjY2RcdTMwNjhcdTRmMWFcdThhNzFcdTMwNTVcdTMwNWJcdTMwOGJcdTMwYjdcdTMwZWFcdTMwZmNcdTMwYmEiLCJzb3J0S2V5Ijoidmlld0NvdW50Iiwic29ydE9yZGVyIjoiZGVzYyIsInBhZ2UiOjEsInBhZ2VTaXplIjozMn19&ss_pos=21&ss_id=c3fcde91-fa72-409c-97b9-795770669f2c見てわすれろ。