URLs

• https://www.pixiv.net/users/81666
• https://twitter.com/heidon
• https://twitter.com/intent/user?user_id=14484686
• https://pawoo.net/@piyotycho
• https://pawoo.net/web/accounts/111909
• https://sketch.pixiv.net/@heidon
• https://www.tinami.com/creator/profile/1413
• https://piyotycho.tumblr.com
• http://mixi.jp/show_friend.pl?id=1286956
• http://photo.mixi.jp/home.pl?owner_id=1286956
• http://www.stickam.jp/profile/heidon
• http://dl.toranoana.jp/cgi-bin/coterie_item_search.cgi?circle=00002601730100000001
• http://pixiv.blogimg.jp/heidon-piyo_tycho/imgs/f/6/
• https://piyotycho.blogspot.com
• http://www.heppoko.gr.jp/~heidon/
• http://www.illus-t.com/products/list8.html
• http://manga-app.jp/store/author/105.html
• http://www16.ocn.ne.jp/~heidon/
• http://file0.pixa.cc/illustrations/e0/be/6b/4d/27/ba/f3/95/ea/4a/original/
• http://www.pixa.cc/profiles/show/3136?mode=detail
• https://www.pixiv.net/stacc/heidon
• http://drawr.net/heidon
• http://plus.google.com/115918071295068624124
• http://theinterviews.jp/heidon
• http://twitpic.com/photos/heidon