Mahou Tsukai to Hoshi Furu Niwa

Upon discovering she had an affinity for magic during a routine test, Rio was offered an admission to a school for magicians like herself. She arrives at the school, anxious about what is expected of her powers. And to her surprise, her first task is to nab herself a familiar before the entrance ceremony! How will Rio ever complete her task on time, and WHAT is this 'Love Curse' she was bestowed upon by the Witch of the West!?