Add new Japan facts to the json file

[TheRamimMiah]

🔗 Related Issue

Closes #29586

[tentoumushii]

🎉 Thanks for your Pull Request, @TheRamimMiah!

We appreciate your contribution to KanaDojo!

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• You starred our repo ⭐
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• PR title is descriptive
• If this closes an issue, it's linked with Closes #<number>

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ありがとうございます! 🙏

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