A new magical girl will make her appearance in the third movie!

[Nagisa Momoe]
Japanese Text:
新たに現れた魔法少女。その姿は幼く、何を願い魔法少女になったのか、また何故現れたのかは一切わからない。
English Translation:
A newly appeared magical girl, she's very young. It's unknown what she wished for to become a magical girl and why did she appeared.

www.madoka-magica.com/
wiki.puella-magi.net/Nagisa_Momoe

Note: Nagisa is voiced by Kana Asumi, who played Yuno in Hidamari Sketch. According to an interview, Madoka Kaname is based on Yuno.

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