I Became the Shadow Body Double of the Princess

At age ten, the commoner Luciel was chosen as a body double for the princess because she resembled her so closely. However, the actual princess, Adjere, ran away, insisting on marrying a commoner man. In place of Adjere, Luciel endured rigorous studies as the legitimate princess, and at sixteen, she developed a romantic connection with Jordan, the crown prince of a neighboring country who had come for a study abroad program. But around that time, Adjere, who was supposed to have run away, suddenly appeared claiming that "I am the true legitimate princess"――?