URLs

• https://www.pixiv.net/users/2785500
• https://www.pixiv.net/stacc/oponsu
• https://twitter.com/shikishimama
• https://twitter.com/intent/user?user_id=834255725656281088
• https://sketch.pixiv.net/@oponsu
• http://sikisimagangu.blog.fc2.com
• http://www.doujinshi.org/browse/circle/11872/
• http://www8.ocn.ne.jp/~udon/