Honoka knows his classmate Ayaka is talented in both the pen and the sword, attractive in face and figure, and that everyone at school calls her the Princess. When he gets himself involved in the "Witch of the Tower" incident one day after school, however, he learns she is also a witch sent to protect him. From then on, his ordinary school life is completely turned upside down, as he discovers that most of his classmates are not what they seem.