昨年の夏に蒼井雷さんuser/765452 "»":[/artists?search%5Burl_matches%5D=https%3A%2F%2Fwww.pixiv.net%2Fusers%2F765452]のレッスル本pixiv #64297314 "»":[/posts?tags=pixiv%3A64297314]に呼んで頂いた際に寄稿した一個。