takeno_koko
Artist. Formerly tagged as yuika (yurika712) or yurichi.
Japanese name: 竹乃 ここ (Takeno Coco or Takeno Koko)
Old name: 結華 (reading is given as Yuika)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=1147941
* Main twitter account: http://twitter.com/cocotakeno
* Old twitter: http://twitter.com/yuika712
* Twitpic account (stopped): http://twitpic.com/photos/yuika712
* The Interviews account: http://theinterviews.jp/yuika712
Not sure this was her second account:
* Name: 竹乃 ここ (Takeno Koko)
** Pixiv account (deleted): http://www.pixiv.net/member.php?id=13615980