An artist, vipper.
The artist's name came from the Japanese term for "lines" because this 2ch user first created Kasane Teto's lineart design and still owns the right of Teto's visual design.

Japanese name: 線 or 線◆4I3LFolXNQ

See also

• Pixiv account: http://www.pixiv.net/member.php?id=702660
• Twitter account: http://twitter.com/sen_teto
• Twitpic account: http://twitpic.com/photos/sen_teto