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A scientist desperately wanting to prove that mermaids exist is ostracized from the scientific community in Japan. He settles down in Australia steadfast on his hypothesis. When a Japanese student visits him in Australia with strange questions about mermaids, how the young man survived in the ocean, and why he doesn't remember anything.
Status
Released
Original Language
JA

A mermaid is ripped from the ocean by a fishing crew only to be tortured and to have her tail cut off. A seemingly helpful stranger intervenes, but then locks her away in an institution for mentally disturbed young women, where no one believes she is a mermaid. With no way out, she is forced to count on her survival instincts, and fight for her life at all costs.

Keisuke
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...