Blue exorcist. Kazue Kato ; [translation & English adaptation, John Werry]. Vol. 1

Rin Okumura is a hot-headed teenager, raised with his younger brother by Father Shiro, an Exorcist. When Father Shiro is killed and the Okumura brothers discover they are actually the half-demon half-human sons of Satan, Rin enrolls in the prestigious True Cross Academy to become an Exorcist himself and learn how to control his demon powers.