User blog comment:Ankit09/Blue Exorcist Season 2 – Under Consideration/@comment-10666447-20140120202300

For example, the Illuminati was starting to be mentioned before the Impure King arc. The anime hasn't mentioned the Illuminati once. Yukio's powers were just begining to awaken in the Impure King arc. In the anime, he already has the occasional flames, slightly pointy ears, sharper teeth, and the ability to hear Kuro. In the manga, Rin didn't have control of his flames until the battle with the Impure King. In the anime, he had complete control and saved everyone at his monastery by burning nothing but the webs, similar to how he burned nothing but the spores in the Impure King fight. So you see, current manga events would make no sense if they tried to bring it into the anime. I am extremely disappointed with the anime, and I will only be reading the manga.