Artist, mangaka. Usually works with Motoi Hiroumi, under the joint pseudonym Nanakamado Anno.
https://www.pixiv.net/users/524533
https://www.pixiv.net/users/1205337
https://www.pixiv.net/stacc/hushigi
https://www.pixiv.net/stacc/metalzigzag
https://twitter.com/nanakamado_anno
https://twitter.com/omochanoanno
https://twitter.com/intent/user?user_id=74479551
https://twitter.com/intent/user?user_id=1621419584619442178
https://seiga.nicovideo.jp/user/illust/76141
https://www.nicovideo.jp/user/76141
https://nijie.info/members.php?id=25712
https://pawoo.net/@metalzigzag
https://pawoo.net/web/accounts/395798
https://sketch.pixiv.net/@metalzigzag
https://www.tinami.com/creator/profile/23987
https://www.tinami.com/creator/profile/26975
http://www.amazon.co.jp/七竈-アンノ/e/B00J5ZWUUO/
http://www.mangaupdates.com/authors.html?id=11288
http://www.geocities.jp/metalzigzag/
http://photozou.jp/photo/top/1495517
http://blogs.yahoo.co.jp/metalzigzag/
http://p.twipple.jp/user/nanakamado_anno
http://twitpic.com/photos/nanakamado_anno