URLs

• https://www.pixiv.net/users/2700969
• https://www.pixiv.net/stacc/quartet_228
• https://twitter.com/re_quartet
• https://twitter.com/intent/user?user_id=137271544
• https://sketch.pixiv.net/@quartet_228
• http://sarashikubi228.x.fc2.com
• https://twitter.com/quartet_228
• http://p.twipple.jp/user/quartet_228
• http://twitpic.com/photos/quartet_228
• http://yfrog.com/user/quartet_228/photos