User blog comment:Ankit09/Blue Exorcist Season 2 – Under Consideration/@comment-121.54.64.36-20130526130401/@comment-4955844-20130610235238

the Anime ended with a filler and 9 or 10 filler episodes so its not really going to exactly follow manga. There would need to be major fillers so that the anime has the same flow as the manga