Negima!.

Ten-year-old teacher/magician Negi Springfield is looking forward to taking his class of girls to the historic cities of Kyoto and Nara, but there's a catch! Negi's student Konoka is a kidnap target of feuding magicians in those very cities. To add to Negi's headaches, his sword-wielding student Setsuna may be a spy for the kidnappers.