Since the establishment of the Academy, a strange myth circulates about the maze inside. A man so handsome will appear in the center of the maze near the tree. That during the founding day of the academy on leap year, he can only be seen. What's more strange is that if a person tried to enter the maze at any time, he or she will be lead straight to where that person first entered. However, during leap year, it was said that those who reached the center of the maze and saw mysterious Oak vanished when the founding day ends. Lauretta, a student of the said academy with various achievements, found this myth ridiculous at first. Not until the leap year falls on her last year on the academy. Things will be different.