Artist.
Japanese Name: いちにぃ
He often works with a net novelist, 俄雨 (Niwakaame / Mishiro Yuu) together.
Circle name: にわかあめ (niwakaame)

See Also.

• Pixiv Account: http://www.pixiv.net/member.php?id=72294
• Home Page of him and Niwakaame : http://niwakass.web.fc2.com/
• Blog of him and Niwakaame : http://niwakassblog.blog41.fc2.com/