http://www.inside-games.jp/article/2012/07/06/57993.html

http://www.inside-games.jp/article/2012/07/13/58161.html

http://www.inside-games.jp/article/2012/07/06/57993.html

SOURCE : http://www.esterior.net/2012/03/sora-zero-ao-no-kiseki-character-and-illustration-book-covers/

http://legendofheroes.wikia.com/wiki/Special:NewFiles?until=20120316052815&hidebots=0

SOURCE : http://kimimisblog.blogspot.be/2011/12/sora-no-kiseki-fc-scenario-book.html