Shima's return to the Holy Cross Academy has caused quite a stir. Additionally, the confrontation with the Illuminati, which was clearly underestimated, has raised many questions. Therefore, the Arch Knight Lightning has come to the academy to prepare the adepts for the advanced exorcist exam. But is that really his only intention? Meanwhile, Yukio is desperately searching for an answer to the question of the origin of the strange power that lies hidden behind his eyes.