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Hiroshima: Bun Hashizume's story of survival

5 August 2015 Last updated at 06:36 BST

Bun Hashizume was 14 years old and lived in Hiroshima, in Japan, when a nuclear bomb was dropped on the city 70 years ago, at the end of World War Two.

She's now 84 and has been telling Newsround the inspiring story of her life before and after that devastating and world-changing event.

This animation contains some sad moments that you might find upsetting.

You can find out more about what happened in Hiroshima here.

Watch 'Hiroshima: A Newsround Special' - Thursday 6 August at 5.30pm on the CBBC channel and on the Newsround website.