The adventures of Sophia de Leiden AOSDL

Young Sophia de Leiden, crown princess to the empire of Leiden Shaft-field, known simply as "Leiden empire" or "Leiden" sets out with two of her cousins; Judith and Mathilda on the journey to university student life, acting as commoners while hiding their identity. What kind of adventures awaits them? What kind of mysteries and riddles awaits our little Sophia to solve?