Blue Exorcist - S03

At True Cross Academy, Rin Okumura starts noticing strange signs that something isn’t right-ordinary people are suddenly able to see the invisible creatures lurking in the human world, Assiah. Rin sees this as a chance to connect with someone new, but his twin brother, Yukio, feels the weight of a secret he’s been keeping: his own awakened powers, which he doesn’t fully understand. As Rin and his classmates train for the yearly Exorcist Certification Exam, the True Cross Order makes a troubling discovery-an artificial gate to the demon realm, Gehenna. The sheer size and advanced technology behind it reveal the involvement of the Illuminati, a shadowy and immensely powerful group. Worse yet, the Order learns the Illuminati has infiltrated them with three spies, and one might even be hiding among the students training to defend humanity from demons.