Artist who draws [[millipen_(medium)|millipen]] art.

Japanese name: 港士郎 (こうしろう, Koushirou)
Old name: かるそら (Karusora)

h4.See also

* Pixiv account: http://www.pixiv.net/member.php?id=15439422
* Twitter account: http://twitter.com/koshiro_sas

koushirou (karusora)