unko_(ilovewas)
Artist.
Japanese name: うん子 (Unko)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=600740
* Illustbook imageboard: http://www.illustbook.net/ilovewas/
* Illustbook account:: http://www.illustbook.net/mypage?user_id=106740444661045386446&tab=submit
Not sure this inactive account and the artist are the same person:
* Names: チリ人妻 or 虫取り大名を生け捕り
** Drawr account (empty): http://drawr.net/ilovewas
** Pixiv account (deleted): http://www.pixiv.net/member.php?id=105454