IMO, I don't see anything wrong with it as of yet. To my knowledge, the handsigns are being used just for fun. I haven't seen any sisters going out and throwing up the signs to show who they are. I really wouldn't worry about it too much because it's obviously only a few chapters and just for fun, I highly doubt that anyone would attempt to make it our 'official' hand sign.
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I love the crescent moon shining in the sky!
G-Phi-B
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