URLs

• https://www.pixiv.net/users/2060319
• https://www.pixiv.net/stacc/nagukumi
• https://twitter.com/kuro_nagura
• https://twitter.com/intent/user?user_id=1012241930636255232
• http://kuronagura.livedoor.blog
• https://www.doujinshi.org/browse/circle/11902/
• http://homepage2.nifty.com/icecreamhouse/