kokoroma
Artist.
Japanese name: こころま (Kokoroma)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=1658060
* Tinami account: http://www.tinami.com/creator/profile/32167
* Nico Nico Douga account: http://www.nicovideo.jp/user/7458033
* Nico Nico Seiga images: http://seiga.nicovideo.jp/user/illust/7458033?target=illust_all