Mahou Sensei Negima! (JP)

Yue Ayase is student #4 in the class. She is known for being highly intelligent in various subjects that interest her, such as philosophy and the contents of the massive library in the school, but she has some of the lowest grades in the class because she hates studying due to the death of her grandfather. She is very close friends with Nodoka, who shares her interest in books, and initially fully supports Nodoka's pursuit of Negi as a love interest by helping Nodoka overcome her shy personality. Yue eventually realizes that she also has feelings for Negi, which she tries to suppress, believing Nodoka will hate her for it. She eventually comes to terms with it and becomes Nodoka's "rival", though their relationship doesn't change at all. After losing her memory in the Magic World, she joins a magical academy, and soon becomes one of the top students in the school, ironically due to her constant hard work and study. Yue is also the leader of the Baka Rangers (know as Dummy Force in English), wearing the black uniform. Yue forms a pactio with Negi, which takes the form of the artifact, Orbis Sensualium Pictus, a cloak, book, witch's hat, and a broom very similar to the basic equipment given to mages in training. She eventually learns that the book is not actually a beginner's manual, but actually a full encyclopedia that can instantly access any magic related information and constantly updates from online resources. Yue also studies magic under Negi, and quickly progresses due to her constant training and her artifact.