https://www.pixiv.net/users/197417
https://www.pixiv.net/stacc/kafuuin
https://twitter.com/simplekafu
https://twitter.com/intent/user?user_id=238488060
https://pawoo.net/@kafuuin
http://simplehouse.sakura.ne.jp
http://doujinshi.mugimugi.org/browse/author/5265/Kafu/
https://ci-en.net/creator/6589
