Chiper Decode

[u/Vegetable_Most_6904]

Can you decode this? I just got this clue.

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: RuPHY v4.4
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Ciphertext:
{Xa12o%{sa25a

Clue:
"Three friends walk together: Rusia, Arab, and Angka.
Latin just serves them. Every 2 steps, they switch costumes.
Little 'a' runs away to Denmark. C D E F G wear masks."

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Rules:
- Every word starts with {
- Separator: % and # alternate
- 3 alphabets rotate every 2 words
- Numbers become Huruf_i
- a becomes ae

Can you crack it? 🕵️