https://www.pixiv.net/users/114948
https://www.pixiv.net/stacc/ryusyu
https://twitter.com/ryusyu08
https://twitter.com/intent/user?user_id=359471326
https://www.nicovideo.jp/user/227342
https://pawoo.net/@ryusyu
https://pawoo.net/web/accounts/401312
https://sketch.pixiv.net/@ryusyu
http://www.geocities.co.jp/AnimeComic/6395/
