Artist.

Japanese name: 栗原 ケンシロウ (Kurihara Kenshirou)
Circle name: 拳王親衛隊 (Ken'ou Shin'eitai)

See also

• Pixiv account: http://www.pixiv.net/member.php?id=3311454
• Twitter account: http://twitter.com/kingdomofsteel1

He is also a member of Bunjutsu Fortissimo, a doujin circle led by fanfic writer Miura Sairasu.
Sairasu often uploads the illustrations of other circle members to his sites/accounts with their permissions. The real artist credits are on his pixiv commentaries.

• Miura's accounts:
• Name: 三浦サイラス (Miura Sairasu)
• Circle: 文術フォルテッシモ (Bunjutsu Fortissimo)
• Illustrators: Kurihara_Kenshirou and Nonohara_Nyorai
• Blog: http://blog.livedoor.jp/sairasu22/
• Pixiv: http://www.pixiv.net/member.php?id=2132505
• Pixiv novels: http://www.pixiv.net/novel/member.php?id=2132505
• Twitter: http://twitter.com/sairasu9