URLs

• https://www.pixiv.net/users/139947
• https://www.pixiv.net/stacc/usuusu
• https://twitter.com/yutakasiumai
• https://twitter.com/intent/user?user_id=95907808
• https://sketch.pixiv.net/@usuusu
• http://siumai777.blog.fc2.com
• http://twitpic.com/photos/yutakasiumai