URLs

• https://www.pixiv.net/users/3117294
• https://www.pixiv.net/stacc/niji-houseki
• https://twitter.com/nijinohouseki
• https://twitter.com/intent/user?user_id=382723738
• https://sketch.pixiv.net/@niji-houseki
• http://39.xmbs.jp/nijinohouseki/