Blue Exorcist -The Blue Night Saga

Yukio separates from his brother Rin and aligns himself with the Illuminati, driven by a relentless pursuit of power and hidden truths. Determined to confront him, Rin realizes he must first uncover the long-buried secrets surrounding their birth. Guided by Mephisto, he embarks on a journey into the past, tracing the footsteps of Shirou Fujimoto, the man who raised them, and Yuri Egin, the woman who gave them life. What Rin discovers is far more harrowing than he ever anticipated. The lives led by Shirou and Yuri were marked by unimaginable hardship, forcing Rin to confront devastating questions about his own existence. Why were children born from the union of the Demon God Satan and a human woman? What catastrophic events truly defined the tragedy known as the Blue Night? As the dark history of his lineage unravels before him, Rin must grapple with the weight of these revelations. When the full scope of the truth finally comes to light, he will be forced to decide what path to take and what answer to give in the face of everything he has learned.