Section 13 is an experimental facility created by Mephisto Pheles to prevent Lucifer from destroying the world. The primary goal of this research facility was to specialize in mass-cloning ...

Another important element in Blue Exorcist: The Blue Night Saga episode 2 was Rin Okumura discovering the truth of how Mephisto was creating several demon king clones to get Lucifer a new body.

The Blue Night Saga episode 4, released on January 26, 2025, marks the beginning of the second part of the fourth season of the anime, featuring Rin Okumura's journey forty years into t ...