runaru
Artist.
See also:
* Niconico Dictionary: http://dic.nicovideo.jp/u/3380195
* Niconico Seiga: http://seiga.nicovideo.jp/user/illust/3380195?target=illust_all
* Pixiv page: http://www.pixiv.net/member.php?id=12645785
* Twitter: http://twitter.com/runa10114