Artist.
Japanese name: 佐野 蒼一 (Sano Souichi)
Old name: ひさめ そういち (Hisame Souichi)
Circle & site name: 未確認遊歩道 (Mikakunin Yuuhodou)
Old site names: "ステップ", "この広い青空で。" or "蒼穹〜暁〜"
https://www.pixiv.net/users/566766
https://www.pixiv.net/stacc/nono1217
https://twitter.com/sano_souiti
https://twitter.com/intent/user?user_id=255058774
https://nijie.info/members.php?id=47562
https://pawoo.net/@nono1217
https://pawoo.net/web/accounts/402267
https://sketch.pixiv.net/@nono1217
https://skeb.jp/@sano_souiti
https://www.tinami.com/creator/profile/42314
http://soukilyuu.web.fc2.com
http://stepbystep.x.fc2.com
http://webcatalog.circle.ms/Perma/Circle/10319741
http://mikakunin-yuhodou.jimdo.com
http://soukilyuuenikki.blog.fc2.com
http://yfrog.com/user/sano_souiti/photos