Kihachiro Kawamoto Feature Animation: Book of the Dead

The Nara period in Japan: Buddhism has recently been imported from China and is all the rage amongst the nobility. Iratsume, a young woman from a noble house, becomes obsessed with the new religion and spends much of her time hand-copying the sutras, trying to understand the teachings of the Buddha. Then, one evening, after copying a thousand pages of sutras, she sees a radiant figure floating above a distant mountain. She leaves her residence as if possessed, and walks until she reaches the foot of the mountain, arriving at a temple women are forbidden to enter. 
In the temple she encounters the figure she had glimpsed. It is not the Buddha after all, but rather the spirit of prince Otsu, who was executed many years ago in a court intrigue. Prince Otsu's ghost was drawn out by her fervent devotion and has mistaken Iratsume for one of her ancestors, a young woman who came to watch the execution. The beautiful face of this young woman, Mimimo No Toji, was the last thing the Prince saw before he died, and his ghost cannot rest while her face haunts his sleep.