The Irregular of the Royal Academy of Magic ~The Strongest Sorcerer From the Slums is Unrivaled in the School of Royals ~

Alternate Name: 
El Irregular de la Real Academia de magia ~el hechicero más fuerte de los barrios bajos no tiene rival en la Escuela de la realeza ~
O Irregular da Academia Real de Magia
Kankitsu Yusura
Nagatsuki Fumi

A Manga adaptation of the Light Novel "The Irregular of the Royal Academy of Magic".

"Magic." A sacred mystery usable only by those chosen. One day, a child from the slums named Arus finds he has the power to use magic. A sorcerer by the name of Genos Willzard learns of his talent and raises him, turning him into the greatest of assassins. One day, Genos gives him an order: To enroll at the Magic Academy...!?