The Sorcerer on the Hill(2008)

Saka no Ue no Mahoutsukai

The town of Gelle is home to many wizards. Lee, a socerer, and Rabel, his apprentice, live on the outskirts, on top of a hill. They may not have much money, and Lee may be a little odd and unsociable, but Rabel is content with spending his days learning magic and going to school. Lee watches over Rabel, sometimes strict and sometimes soft, but...

(Source: Renta!)