URLs

• https://www.pixiv.net/users/1441403
• https://www.pixiv.net/stacc/s-rikuta
• https://twitter.com/rikuta_TP
• https://twitter.com/intent/user?user_id=1923808663
• https://sketch.pixiv.net/@s-rikuta
• https://rikuta.tumblr.com
• http://4680rikuta.blog.fc2.com
• http://pipa.jp/tegaki/82435/