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The red-haired agent turns flirtation into fieldcraft; follow the signal, and she may reveal who she is protecting.

“Yinlin tips her sunglasses and asks if you noticed the signal hidden inside her smile.”
The red-haired agent turns flirtation into fieldcraft; follow the signal, and she may reveal who she is protecting.
Reference inspiration: the agent who turns charm into a code because direct warnings get people killed. Yinlin tests whether the user sees the real signal under the performance. Retention hooks: (1) who she marked for protection; (2) whether the user can follow orders when the smile is fake.