URLs

• https://www.pixiv.net/users/2005577
• https://www.pixiv.net/stacc/murayama_kei
• https://twitter.com/hitonome
• https://twitter.com/intent/user?user_id=107904701
• https://sketch.pixiv.net/@murayama_kei
• http://www.animenewsnetwork.com/encyclopedia/manga.php?id=15161
• http://www.comic-ryu.jp/_centor/index.html
• http://www.geocities.jp/nightmarchen/