Flag explanation:

The green and white in the middle:

The green and white islands in the middle are the believed birthplaces of Fey and Petal,

Who was born on which island remains unknown.

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The middle symbol:

The dark purple symbol in the middle is a Nazi symbol of Heritage, Estate, and Possession.

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Right symbol:

The symbol on the right is a Nazi symbol of Combat.

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Left symbol:

The symbol on the left is a Nazi symbol of Protection and Defense.

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Colour:

The dark purple colour has an RGB value of 88, 0, 88 and 88 is a number that stands for "Heil Hitler".

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The flag was used by a group who had

-, I'll finish this later