Zero no Tsukaima

Louise is mocked at Tristain's magic academy because her spells so often end in explosions. When students summon their familiars, she produces something no one expects: Saito Hiraga, an ordinary boy from Japan. Bound to her by a magical contract, Saito must adjust to a world of aristocratic mages while Louise insists on treating him as her servant.

The strange marks on Saito's hand soon reveal an exceptional aptitude for wielding weapons. Their arguments and uneasy dependence draw them into dangers beyond school, as Louise struggles to prove herself and Saito searches for a way home. Neither understands yet why her apparently failed spell brought him there.