Saka no Ue no MahoutsukaiSaka no Ue no Mahoutsukai; The Magician on the Hill; The Sorcerer on the Hill; The Wizard on the Hill; 坂の上の魔法使い; 山坡上的魔法師; 無二の王 坂の上の魔法使い

From Girls' Generation Scanlations: The sorcerer Rii and his apprentice Raberu reside in the hills on the outskirts of Geru, a town where many sorcerers dwell. Between Rii steering clear of the town and his eccentricities, it may not be the most interesting home life, but Raberu fills his days by going to school and learning about magic. But who is Rii, the strict and kind sorcerer, and why is he watching over Raberu?