koiboshi_chika
Artist.
Japanese name: 恋星 チカ (Koiboshi Chika)
Old name: 恋星 (Koiboshi)
See also
* Pixiv account: http://www.pixiv.net/member.php?id=20981720
* Twitter account: http://twitter.com/LoveStar_Chika
* Coconala information page: http://coconala.com/users/331696