Rin Okumura, the nephew of the famous exorcist Father Fujimoto, never knew his real father. One day, a fateful confrontation with Father Fujimoto forces Rin to face a terrible truth - the blood of the demon Satan flows in his veins! Rin vows to defeat Satan, but that means he must enter the mysterious True Cross Academy and become an exorcist himself. Rin and his friends continue the investigation into the Seven Mysteries of the Academy. Yukio watches as the Exwires confront the academy's ghosts, worried about the doubts that overwhelm him regarding his own feelings. Rin seems to be learning to control his power more, but harnessing his inner demonic fire will be salvation or destruction;