A female artist from Japan.
Based on her tumblr and twitter her author's name is Momoco Haru, shortened to momoco (ももこ) on pixiv.
Artist name: momoco / ももこ
Homepage: http://www5f.biglobe.ne.jp/~pokemaru/momoneko/index.html (offline)
Pixiv profile: http://www.pixiv.net/member.php?id=1113943
Tumblr: https://momocoharu.tumblr.com/