The Familiar of Zero(2006)

The Familiar of Zero is a fantasy anime series following Louise, a magic academy student notorious for her failed spellcasting—earning her the nickname "Louise the Zero." During a crucial summoning ritual, she inexplicably brings forth Saito, an ordinary Japanese teenager from Tokyo, binding him to her as a familiar. Trapped in a magical world far from home, Saito must navigate his new role while Louise struggles to master her abilities. Their unlikely partnership drives a blend of comedy, romance, and adventure as they face academy challenges and larger threats. The series explores themes of growth and connection between two misfits forced together by circumstance, balancing humor with genuine character development and magical world-building.