User blog comment:RennaGraceCarter/Yukino's Sister/@comment-121.54.40.52-20131228125525/@comment-49.146.205.254-20140504070738

after my long research i finally found out that yukino aguria is the younger sister of angel ( the real name of angel is sorano ). ( http://fairytail.wikia.com/wiki/Yukino_Aguria ) , http://fairytail.wikia.com/wiki/Sorano )