URLs

• https://www.pixiv.net/users/7780
• https://www.pixiv.net/stacc/phead1886
• https://twitter.com/ishikawahideki
• https://twitter.com/intent/user?user_id=66292900
• https://pawoo.net/@phead1886
• https://pawoo.net/web/accounts/244495
• https://sketch.pixiv.net/@phead1886
• http://mixi.jp/view_community.pl?id=3603258/
• http://studiop-head.neko.ne.jp
• http://twitpic.com/photos/ishikawahideki