Blue Exorcist

Blue Exorcist is an anime series by Kazue Katō, based on the manga of the same name. The story follows a 15-year-old boy, Rin Okumura, who bears the title of Satan's son, who then follows the path of an exorcist to avenge the death of his adoptive father after he sacrificed himself to save him from Satan's clutches. Rin ends up joining the Order of the True Cross, an organization where they train exorcists capable of defeating demons, where he will meet comrades who pursue their own goals.

Synopsis

In the world there are Assiah, the territory of humans and Gehenna, the territory of demons. Although normally these two dimensions do not intersect, the fact that humans have managed to possess material substances makes them enter the material world. But among humans there are those who can exorcise these demons: the exorcists.