Artist, mangaka.

Japanese name: 火山一角 (ひやま いずみ, Hiyama Izumi)
Old pen-name: 氷山 一角 (Hiyama Izumi)

See also

• Pixiv account: http://www.pixiv.net/member.php?id=2182747
• Twitter account: http://twitter.com/hiyamaizumi