Artist and mangaka, best known as the author of Doujin Work, Mangaka-san to Assistant-san to, Aho Girl, and Kanojo mo Kanojo. English-speaking fans might also know him as the ultimate origin of the ponos, JAM IT IN, A cat is fine too and so moe I'm gonna die! memes, which all came from unofficial English translations of Hiroyuki's doujinshi work in the Fate & Tsukihime franchises; some of his other notable doujinshi include the Touhou series "Acting on Instinct".
Japanese name: ヒロユキ (Hiroyuki)
Circle & site name: 自称清純派 (Jishou Seijunha)
https://www.pixiv.net/users/156638
https://www.pixiv.net/stacc/seijunha
https://twitter.com/burumakun
https://twitter.com/intent/user?user_id=87070481
https://seiga.nicovideo.jp/user/illust/1351865
https://www.nicovideo.jp/user/1351865
https://bananakun.fanbox.cc
https://www.pixiv.net/fanbox/creator/156638
https://sketch.pixiv.net/@seijunha
http://en.wikipedia.org/wiki/Hiroyuki_(artist)
http://ja.wikipedia.org/wiki/ヒロユキ
http://doujinshi.mugimugi.org/browse/author/2735/Hiroyuki
http://p.twipple.jp/user/burumakun
http://twitpic.com/photos/burumakun