Artist.
Name: 某しわ (Bou Siwa)
Circle name: しわしわ (Siwasiwa)
https://www.pixiv.net/users/657448
https://www.pixiv.net/stacc/karinren
https://twitter.com/mghjxd
https://twitter.com/intent/user?user_id=200869200
https://seiga.nicovideo.jp/user/illust/11425066
https://www.nicovideo.jp/user/11425066
https://sketch.pixiv.net/@karinren
http://piapro.jp/a6220
http://www.doujinshi.org/browse/author/125769/
https://www.melonbooks.co.jp/circle/index.php?circle_id=25142
https://twitter.com/bou_siwa
https://twitter.com/karin_0202
http://p.twipple.jp/user/karin_0202
http://twitpic.com/photos/karin_0202
http://twpf.jp/bou_siwa
