Majorika

Majorika is a witch, whom Doremi discovers. Because Doremi calls her a witch, she turns into a witch frog. She cannot regain her original form until Doremi becomes a witch. Thus, she takes on Doremi as a student. However, with Doremi, she gets more than she bargained for as Doremi's friends discover who she is, Majorika is forced to take on even more students.