URLs

• https://www.pixiv.net/users/538635
• https://www.pixiv.net/stacc/hirorin1122
• https://sketch.pixiv.net/@hirorin1122
• http://ja.wikipedia.org/wiki/石田ヒロユキ
• https://www.animenewsnetwork.com/encyclopedia/people.php?id=66150
• http://www1.ttcn.ne.jp/~hiroyuki.nmh/