Sorry DarkLK, I just realized I put the paragraph wrongly. I already edited it up there.
Source:
http://pc-game.doorblog.jp/archives/1527875.html&prev=search
This link has the post about Ep6 and Ep8 Guidebook excerpt that provides connection between Hanyuu and Featherine.
Revelation readings of EP6 (probably came from the Ep6 Guidebook)
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Hurka durka, Fezarinu looks like someone from Higurashi. Ryukishi answered Higurashi is his previous works. He will leave that interpretation to the player. But those who believed there are some link, he think he may interpret it that way.
Ep8 Guidebook
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ÒüØÒü«ÒüƒÒéüÒÇüÒâòÒéºÒéÂÒâ¬Òâ╝ÒâîÒü¿Òü»Òü¥ÒüúÒüƒÒüÅþò░Òü¬ÒéïÒéóÒéñÒâçÒâ│ÒâåÒéúÒâåÒéúÒ鯵îüÒüúÒüƒÒé¡ÒâúÒâ®Òü½Òü¬ÒüúÒüªÒüùÒü¥ÒüúÒüƒ´¢Ñ´¢Ñ´¢ÑÒÇüÒü¿ÒüäÒüåÚÜáÒüùÞ¿¡Õ«ÜÒüîÒüéÒüúÒüƒÒéèÒü¬ÒüïÒüúÒüƒÒé财Ѵ¢Ñ´¢ÑÒÇé
Translation of Featherine profile provided by
http://ruriair.tumblr.com/post/6574141267/ryukishi-character-comments-part-1
Featherine
Do you remember how there were katana cuts on Hanyuu's horns? With that blow, "her" memory device broke down, and there was a bug in her existence. Because of that, she became a character with a completely different identity from Featherine… or there may or may not have been a hidden scenario like that…
(Ryukishi is just being a roundabout here, there is no point of mentioning this if he didn't agree himself that Featherine = Hanyuu)
Japanese wikipedia quotes Ryukishi
Õăõ¢£ÞÇàÒü«þ½£Ú¿ÄÕú½07ÒüäÒéÅÒüÅÒÇüµÿöÒü«ÒüôÒéìÒü½Úá¡Òü«ÕÀªÒü«ÞºÆÒéÆÕéÀÒüñÒüæÒüƒþÁɵףÒü«Õº┐ÒüîÒÇü『Òü▓ÒüÉÒéëÒüùÒü«Òü¬ÒüÅÚáâÒü½』Òü½þÖ╗Õá┤ÒüÖÒéïÒÇî þ¥¢ÕàÑ ÒÇìÒüáÒü¿ÒüäÒüåÒÇéµ£¼õ¢£ÒüºÒü»ÒÇüÞºÆÒü«ÕéÀÒüîÕø×Õ¥®ÒüùÒüªõ╗èÒü½Þç│Òéï´╝êõ¢£õ©¡ÒüºÒü»µÿÄÒüïÒüòÒéîÒüªÒüäÒü¬Òüä)ÒÇéÒâ×Òâ│Òé¼þëêÒü½ÒüèÒüäÒüªÒü»ÒÇüþ¥¢ÕàÑÒüØÒü«ÒééÒü«Òü«Õº┐ÒüîÕø×µâ│ÒüºþÖ╗Õá┤ÒüùÒüªÒüäÒéïÒÇé
Says Ryukishi07 of authorship, Hanyu who appeared in "When They Cry" is the figure of the result of damage to the corner to the left of the head to the old days. In this work, the wound of the corner already recovered. In the manga version, the figure of Hanyu has appeared in recollection.
Blog about Japanese guy agreed with Japanese wikipedia
http://kisakiyukimi.blog.fc2.com/?mode=m&no=102 (this doesn't even matter honestly)
Japanese guy agree with Featherine = Hanyu
irimadonna.blog63.fc2.com/blog-entry-778.html (this too)
Super Hanyuu > The Living Tribunal.