URLs

• https://www.pixiv.net/users/143250
• https://www.pixiv.net/stacc/kak_ka
• https://twitter.com/kakoi_kazuhiko
• https://twitter.com/intent/user?user_id=91246208
• https://sketch.pixiv.net/@kak_ka
• http://www.ne.jp/asahi/jx/kakoi/
• http://twitpic.com/photos/kakoi_kazuhiko