URLs

• https://www.pixiv.net/users/549058
• https://www.pixiv.net/stacc/hira3hira3
• https://twitter.com/hirafuming
• https://twitter.com/intent/user?user_id=874994502674522112
• https://sketch.pixiv.net/@hira3hira3
• http://hirafumi.pupu.jp