hedora-aki
Futaba Channel artist. Father of Nijie-tan.
Nijie name: へどらあき (Hedora-aki) or へどあき (Hedoaki)
Judging from pixiv #30330520 and this CG set, Hedora-aki is an alias of Kusanagi Keita, a Nijiura artist.
Pixiv name: くさなぎ けいた (Kusanagi Keita)
Futaba name: ゲジ「」 (Geji[])
See also
* Hedora-aki's nijie account: http://nijie.info/members.php?id=377
* Kusanagi Keita's accounts:
** Blog: http://sky.ap.teacup.com/kusanagi/
** Pixiv: http://www.pixiv.net/member.php?id=4503
** Twitter: http://twitter.com/gejiko
** Twitpic: http://twitpic.com/photos/gejiko
** Twipple photo: http://p.twipple.jp/user/gejiko