URLs

• https://www.pixiv.net/users/110638
• https://www.pixiv.net/stacc/tetrak
• https://twitter.com/Tetras_Factory
• https://twitter.com/intent/user?user_id=358689373
• http://tetra01.blog.fc2.com
• http://tetrak.blog.fc2.com
• http://id9.fm-p.jp/2/tetra2005
• http://www.geocities.jp/tetra_kawaguchi/
• http://www.geocities.jp/tetra_kawaguchi/sub/gal.htm
• http://ip.tosp.co.jp/i.asp?i=tetra2005
• http://tetrak.xxxxxxxx.jp