URLs

• https://www.deviantart.com/kou2b
• https://seiga.nicovideo.jp/user/illust/2462801
• https://www.nicovideo.jp/user/2462801
• http://www.koufactory.com/aa/index.html
• https://www.pixiv.net/users/412590
• https://www.pixiv.net/stacc/kou2b