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...Can you use magic? Can you fight with devils? If both of us are captured here, then who will save the Earth?...
~ Miyoko to Nobita.

Miyoko Mangetsu is one of the main protagonists of the anime movie Doraemon: Nobita's Great Adventure into the Underworld and its remake, Doraemon: Nobita's New Great Adventure into the Underworld ~The 7 Magic Users~. She is the daughter of Professor Mangetsu and helps her father decode a secret that will allow them to defeat Demaon.

In the original movie, she was voiced by Mami Koyama. In the remake, she was voiced by Saki Aibu as a teenager and Tamaki Matsumoto as a child.

History

Doraemon: Nobita's Great Adventure into the Underworld

Miyoko is the daughter of Professor Mangetsu, who tries to warn others about the demons' incoming invasion but no one believes him. She helps her father to decode the book that the escaped prisoners of the Underworld thousands of years ago left, which has information to defeat the demon lord Demaon. When Miyoko meets the main characters, she invites them to tea while her father tells them that his theory is real. Later that night, Professor Mangetsu manages to translate the book, the demons kidnap him and make his house disappear afterwards while Miyoko is transformed by them into a cat, and is only able to revert to her human form under the moonlight. Thankfully, Professor Mangetsu managed to hide the book in the tree hollow beforehand.

Miyoko would later be adopted by Nobita and Doraemon, and reverts to her human form at night when the moonlight shines on her. She then explains what is going on to them and the rest of the main group, and that they are the chosen ones according to the fortune-telling of the crystal ball, but only Nobita and Doraemon believe her. As a result, she decides to defeat the demons alone.

The next day, Miyoko returns to the place that her house used to be to take back the book, and Nobita and Doraemon finds her. Just then Shizuka is chased by a demon, so Miyoko comes out of hiding to rescue her. The demon almost defeats Miyoko and attempts to kill her, but Doraemon kills him by deflecting his attack back at him via the Reverse Cloak. Afterwards, the four determine to go to the Underworld, with Suneo and Gian joining them.

Upon arriving to the Underworld, the group manage to sneak inside Demaon's castle and throw darts at his heart following the book's instruction, but it doesn't harm him at the slightest, much to their surprise and forcing them to flee. While they are on the run, the demons capture Shizuka, Suneo and Gian, so Miyoko entrusts the book to Nobita decides to let herself be captured. Just before she is executed, Nobita, Doraemon and Dorami come to rescue her and the group. They then travel to the location of Demaon's heart, which was revealed to be in outer space. Despite Demaon and his armies' effort to stop them, Gian manages to throw the dart at the heart, killing him and destroying the Underworld, ending his reign of terror once and for all.

Afterwards, Miyoko and her father celebrate with the main group and bid them a farewell before they return to their world.

Doraemon: Nobita's New Great Adventure into the Underworld ~The 7 Magic Users~

Miyoko's role largely remains the same, but here it's added that Medusa is actually her mother, Mrs. Mangetsu. When Miyoko was young, she was sick and there was no cure for her disease, so Mrs. Mangetsu summoned Demaon and made a deal with him to cure her daughter in exchange of her becoming a demon under his service.

When Medusa's attempt to destroy the Moon fails, her true identity is revealed, much to Miyoko's shock. After Demaon is defeated, she bids a goodbye to her mother before the latter disintegrates.

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           Doraemon logo.png Heroes

Manga and Anime
Doraemon | Nobita Nobi | Shizuka Minamoto | Suneo Honekawa | Takeshi Goda | Dorami | Sewashi Nobi | Mini-Doras | Time Patrol

Movies
1979 Series
Pisuke | Roppuru | Chammy | Clem | Miyoko Mangetsu | Paruparu | Sapio Burikin | Papi | Gusuke | Milk | Poko

2005 Series
Miyoko Mangetsu | Sophia | Papi

Spin-Offs
The Doraemons: The Doraemons (Doraemon | Dora the Kid | Wang Dora | El Matadora | Dora-nichov | Dora Med III | Dora-rinho) | Principal Teraodai | Noramyako | Dorapin | Mimimi

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