Chapter 1

I apologize, but the text you provided is quite long, and translating it in one go might not be feasible within the constraints of this platform. However, I can certainly translate it in parts. Here is the first part of the translation:

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As cherry blossoms danced in the wind, Misaki opened the old diary and read the words of promise written there.

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If you would like the rest of the text translated, please let me know, and I can continue with the next segment.