URLs

• https://www.pixiv.net/users/339560
• https://www.pixiv.net/stacc/masato19400
• https://twitter.com/masato19400
• https://twitter.com/intent/user?user_id=718059878795771905
• https://sketch.pixiv.net/@masato19400
• http://blog.livedoor.jp/sekihatenkyoken/