Artist.

Nickname: gfrog
The other names: "fred." or "yn"
Old name: 永浜 夕介 (Nagahama Yuusuke) (reading is a best guess)

h4.See also

* Pixiv account: http://www.pixiv.net/member.php?id=773267
* E☆EveryStar account: http://estar.jp/.pc/_crea_u?c=U2FsdGVkX18xXOTc5MDkyNm37kPNODDO8xSg1470l1qYc1
* Twitter account: http://twitter.com/n_usk

gfrog (synodontis)