other title:
哆啦A梦：大雄的人鱼大海战
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映画ドラえもん のび太の人魚大海戦
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Nobita, Doraemon, and the rest must come to the aid of mermaid princess Sophia, whose undersea kingdom is suffering under the weight of a war. Their only hope lies in a mythical sword from the planet Aqua...
