Artist.

Japanese name: 弘原 うみ (Hirohara Umi) (reading is a best guess)
The other name: 弘原海 (Wadatsumi)

h4.See also

* Niconico account: http://www.nicovideo.jp/user/36587582
* Niconico Seiga: http://seiga.nicovideo.jp/user/illust/36587582
* Pixiv account: http://www.pixiv.net/member.php?id=12643981
* Privatter account: http://privatter.net/u/wadatsumi_
* Old twitter account (deleted): http://twitter.com/wadatsumi_

hirohara umi (wadatsumi)