Artist.
Japanese name: 時雨 優 (Shigure Yuu)
Circle & site name: E･S･Laboratory
https://www.pixiv.net/users/37617
https://www.pixiv.net/stacc/yshigure
https://twitter.com/shigureyu
https://twitter.com/intent/user?user_id=147761254
https://sketch.pixiv.net/@yshigure
https://www.tinami.com/creator/profile/24961
http://privatter.net/u/shigureyu
http://www.doujinshi.org/browse/circle/17772/
http://p.twipple.jp/user/shigureyu
http://twitpic.com/photos/shigureyu