Although the traitor was revealed, the Right Eye of the Impure King has been stolen. While confronting Ryuji, Rin loses control of his blue flames in front of the gathered exorcists. In all of the commotion, Tatsuma slips Shura a letter addressed to Rin.
Show: Blue Exorcist
Humans live in the world of Assiah, demons in Gehenna. The two dimensions are not meant to interfere with each other, but demons still possess creatures in Assiah in spite of this. The humans who can fight these demons are known as exorcists. Rin Okumura is a boy who bears the curse of being Satan's illegitimate son. His foster father sacrificed himself to save him from demons. To avenge his foster father's death as well as to prove himself, Rin decides to follow the path of an exorcist and defeat his own father, Satan. To hone his raw skills, Rin enters True Cross Academy to train with other exorcist candidates.
Act of Treachery
Who is betraying the Myoda sect? Without high priest Tatsuma in attendance, the general meeting falls into chaos and ends without a conclusion. As Suguro resolves to find and question his father, he witnesses someone sneaking into the Kyoto field office…
Suspicion Will Raise Bogies
The Myoda Sect has an emergency meeting to discuss the failed attempt to steal the Right Eye of the Impure King and discover who among them is the traitor collaborating with Todo. In the occasion, suspicions were raised towards two of the sect's exorcists, Renzo's older brother Juzo and Mamushi as they were present at the scene and were Todo's students in the past, but the head priest, who did not attend the meeting, was counted as a suspect as well, much to Ryuji's anger. Meanwhile, Rin continues with his training to control his flames while trying to reconcile with his friends, who fear how the Myoda will respond once they learn that he is the son of Satan.
Strange Bedfellows
The Exwires arrive at Kyoto, and Ryuji, Konekomaru and Renzo take the opportunity to reunite with their families, while Rin and the others tend to the Exorcists of the Myoda Sect, who got wounded guarding the Right Eye of the Impure King. In the occasion, Rin meets Ryuji's father, and learns that Ryuji is resentful of him, as despite being the leader of the Myoda Sect, he is not respected by the others, as he relegated his duties since the Sect, which was weakened after losing several of its members on the Blue Night, joined the True Cross Order. Meanwhile, Todo, with the Left Eye of the Impure King replacing his own, contacts his mole inside the Sect, planning another attempt to steal the Right Eye.