Negima! - Ken Akamatsu

Ten-year-old teacher/magician Negi Springfield is looking forward to taking his class of beautiful 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. Her grandfather, the school principal, orders Negi to protect Konoka - while keeping the fact that she's in danger a secret from the unsuspecting girl. To add to Negi's headaches, his sword-wielding student, Setsuna, may be a spy for the kidnappers. With so much on his mind, how is a young magician to see the sights, care for a sarcastic stoat, and stay in the good graces of his hot-tempered magical partner Asuna?