Ouritsu Mahou Gakuen no Saikasei: Slum Agari no Saikyou Mahoushi, Kizoku darake no Gakuen de Musou suru  

The Irregular of the Royal Academy of Magic, Ouritsu Mahou Gakuen no Saikasei: Hinkongai Agari no Saikyou Mahoushi, Kizoku darake no Gakuen de Musou suru, 王立魔法学園の最下生～貧困街〈スラム〉上がりの最強魔法師、貴族だらけの学園で無双する～, Ouritsu Mahou Gakuen no Saikasei: Hikongai Agari no Saikyou Mahoushi, Kizoku Darake no Gakuen de Musou Suru, 王立魔法学園の最下生 ~貧困街上がりの最強魔法師、貴族だらけの学園で無双する~

The concept of "magic" is a mysterious and powerful force that can only be wielded by those who have been chosen. In this story, we follow the journey of Ars, a young boy from the slums who discovers he has the ability to use magic. He is discovered by Genos Wilzard, a skilled sorcerer, who takes it upon himself to train and mold Ars into an elite assassin. Eventually, Genos gives Ars an important task: to attend the Magic Academy and hone his skills even further.