Blue Exorcist -Shimane Illuminati Saga

At True Cross Academy, Rin Okumura begins to notice unsettling anomalies in the human realm of Assiah. Ordinary people are inexplicably developing the ability to see invisible creatures that wander their world. While Rin views this strange development as a chance to connect with others and forge new friendships, his twin brother, Yukio, carries a far heavier burden. Overwhelmed by his academic studies, exorcist responsibilities, and teaching duties, Yukio has kept his own newly awakened powers a secret, struggling to comprehend their true nature and magnitude. As Rin and his companions focus on preparing for the annual Exorcist Certification Exam, a much larger threat emerges behind the scenes. The True Cross Order discovers the first artificial gateway leading directly into Gehenna, the demonic realm. Struck by the sheer scale of the structure and the highly advanced technology required to construct it, the exorcists realize they are facing the Illuminati—an extraordinarily wealthy and influential organization operating from the shadows. Compounding this danger, the enigmatic Illuminati have successfully embedded three spies within the ranks of the True Cross Order. One of these infiltrators may already be hiding among the very aspiring exorcists who have sworn to defend humanity against demonic forces.