Эп. 3: Даг узнаёт о книге Дроссельмейера и обретает потерянное сердце одиночества Мюуто.

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Duck learns about the book The Prince and the Raven. She discovers that its author is Drosselmeyer, and that he died a long time ago. She bumps into Myuuto, who is retrieving water for Rue, while he and Rue were on a picnic. Duck uses up the water to clean a cut Myuuto got, and while on a search for more water, the two stumble upon a restaurant. Inside, a woman, Ebine, serves them cold food and Duck discovers that she has another piece of Myuuto’s heart: the feeling of loneliness. She retrieves it and afterwards Rue (and Fakir, who had been looking for him) discuss Princess Tutu, and her fate. The audience learns that if Princess Tutu confesses her love to the Prince, she will turn into a speck of light. (Source: Wikipedia)