Ep 20 title





Air Date

August 28, 2011



Opening Song

In My World

Ending Song

Wired Life

Episode 19
Episode 21
List of Episodes

Mask is the twentieth episode of the Ao no Exorcist anime. It first aired on August 28, 2011.


Rin and Yukio find that their friends from the monastery where they were raised were attacked by a masked individual who covered their entire bodies with an seemingly indestructible spider web. While pursuing the culprit, whose objective is to attack anyone related to the son of Satan to make him suffer, Yukio stumbles into Neuhaus who flees without further explanation. Despite having his sword sealed by the web, Rin insists to go after the masked one but is held back by Yukio and Shura, until he gets word that his friends, Suguro, Renzo and Konekomaru are being attacked too and rushes to help them. By managing to control his flames properly, Rin defeats the attacker, who flees thanks to Neuhaus who reveals her to be his wife, and safely releases his friends.

Characters In Order of Appearance


-In a scene where Rin is attempting to save his friends, his sword is shown to be drawn, but in reality it is actually still sheathed.

-Inscription in Polish seen in the monastery says "Nie popuszczę takiego, powiązanego z Szatanem" which is supposed to mean "I'll never forgive anyone related to Satan". It's a mistake since it actually means "I won't let go the one connected to Satan". A correct inscription should say "Nigdy nie przebaczę komukolwiek spokrewnionemu z Szatanem".

Manga & Anime Differences

This is an anime only episode, it does not appear in the Manga.


v - e Episodes
Exorcist Cram School Enrollment arc Episode 1Episode 2Episode 3Episode 4Episode 5Episode 6Episode 7Episode 8Episode 9
Exorcist Candidate Live Combat arc Episode 10Episode 11Episode 12Episode 13Episode 14Episode 15Episode 16Episode 17
Anime-Exclusive arc Episode 18Episode 19Episode 20Episode 21Episode 22Episode 23
Episode 24Episode 25
Kyoto Impure King arc Episode 26Episode 27Episode 28Episode 29Episode 30Episode 31Episode 32Episode 33Episode 34Episode 35Episode 36Episode 37
OVAs Kuro no Iede (OVA)OVA 2OVA 3
Omakes Ao no Exorcist 「Anime Special: Ura Eku」
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