What if Wei Wuxian and Lan Wanji somewhat figured their feelings for each other (though it was expressed through actions rather than words until after WWX's resurrection)?
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Follow-up: what if they stole intimate moments from each other (from kisses to sex) in each of their reunions ever since the Wen cave (first kiss), the hunt (blind kiss to almost sex), and finally the Yiling Burial Grounds (first time)?

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What if Wei Ying was a woman?

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or

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What if Lan Zhan was a woman?

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What if Lan Zhan learned about Wei Ying's golden core much earlier?

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What if Wei Ying decided to come back to Gusu with Lan Zhan before it was too late?

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or

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What if Lan Zhan ended up dragging Wei Ying to Gusu by force?

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What if Lan Zhan ended up staying in the Burial Grounds with Wei Ying and Wens?

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What if Wei Ying and Lan Zhan ended up raising A-Yuan together?

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What if they eloped earlier?

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What if Wei Wuxian ended up watching Lan Zhan raise Yuan as a ghost and still wasn't able to communicate, no matter how much he wanted to?

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What if Wei Wuxian and Lan Wangji's roles were reversed?