Blue Exorcist - Season 5 - Eps 8: The Blue Night
Shiemi cheers up after Rin suddenly appears before her. After hearing Shiemi's voice, Rin regains consciousness and heads back to the past to see the events all the way through. In the past, Satan's possessed body progressively deteriorates, beginning to break down and go out of control. The Blue Night begins at last. As powerful clergy around the world are engulfed in blue flames one after another, the Myodha Sect in Kyoto, the Three Sages in the Vatican, Shiro and the Knights in the Japan Branch struggle against the dire situation.
About Blue Exorcist

Title: Blue Exorcist
First Air Date: 2011-04-17
Last Air Date: 2025-03-23
Status: Ended
Rating: 7.901/10 (from 465 votes)
Language: JA
Seasons: 6
Total Episodes: 73
Network: MBS TBS CBC Gunma TV Tokyo MX BS11 Tochigi TV i-Television SBS
Genres: Animation, Sci-Fi & Fantasy, Mystery, Action & Adventure
Production Companies: A-1 Pictures, Aniplex, Shueisha, movic, dentsu, MBS
Synopsis
Humans live in the world of Assiah, demons in Gehenna. The two dimensions are not meant to interfere with each other, but demons still possess creatures in Assiah in spite of this. The humans who can fight these demons are known as exorcists. Rin Okumura is a boy who bears the curse of being Satan's illegitimate son. His foster father sacrificed himself to save him from demons. To avenge his foster father's death as well as to prove himself, Rin decides to follow the path of an exorcist and defeat his own father, Satan. To hone his raw skills, Rin enters True Cross Academy to train with other exorcist candidates.
Cast

Hiroshi Kamiya
Mephisto Pheles (voice)