Negima! Magister Negi Magi vol 13

When ten-year-old Negi Springfield graduates from magic academy, he is given a rather unexpected training assignment - to teach English at an all-girls high school! In order to become a master mage, Negi must tutor a class of thirty-one pupils while keeping his magical powers hidden. Because of his young age most of the girls struggle to take him seriously, treating him instead like a cute child. However not all everyone in the class is happy with their new tutor. Kagurazaka Asuna has a crush on the teacher Negi is replacing, and when she discovers the boy's secret she decides to make his life as hard as possible. Will Negi be able to complete his training and realize his dreams despite all the obstacles that lay ahead?