Book 4: Knight Story Art
Starting with one you know, White:
Next up is her brother, Blue:
Then we have Black:
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And Red both with and without his helmet:
And last but not least, Purple. Both in her young and her old form. Also, I made an edit to an earlier chapter to specify that Purple ages whenever she divines a prophecy. And then she gets younger again as she kills more demons afterwards.
So here is her older form(mid thirties in appearance):
And here she is in her younger form(mid twenties in appearance):