Last Night I Found Out I'm an Alien Princess.

In an idyllic rural setting an old bamboo cutter and his wife raise a tiny girl found nestled within a glowing bamboo stalk along with a fortune in gold. As she approaches adulthood the bamboo cutter uses the fortune to purchase a villa in the capital, buy himself a title and employ tutors to transform the country girl - now given the name Kaguya - into a refined woman. News of her beauty brings powerful and wealthy suitors who compete for her hand in marriage, culminating in a proposal from the emperor. All the while Kaguya wishes that she and her family could return to their former life and to be reunited with her sweetheart, Sutemaru. Sooner or later, though, her true origins will make their own claim upon her.