Artist.

Japanese name: 青梗彩 (Chingen-sai, a pun on 青梗菜, "Qing Geng Cai)":http://en.wikipedia.org/wiki/Chinese_cabbage 

h4.See also

* Pixiv account: http://www.pixiv.net/member.php?id=2669107
chingensai (qinggeng-sai)