Blue Exorcist: The Blue Night Saga (青の祓魔師 終夜篇, Ao no Exorcist: Yosuga-hen) is a 2025 anime series that is the second cour of the fourth season of the Blue Exorcist anime television series. It is based on the manga series of the same name by Kazue Kato.
It premiered in Japan on January 4, 2025.[1] An English dub was being produced,[2] and it premiered on Crunchyroll's streaming service on January 25th, 2025.
Synopsis
Yukio parts ways with Rin and makes his way to the Illuminati.
In order to face Yukio, who is seeking strength and the truth, Rin decides that he must learn the secret of their birth. With Mephisto’s guidance, he embarks on a journey to the past.
Rin traces the footsteps of their adoptive father, Shiro Fujimoto, and birth mother, Yuri Egin. But the path they took in life was harsher than Rin could have ever imagined....
Why were children born between the Demon God Satan and a human?
What was the Blue Night?
And when Rin learns everything, what will be his answer...?