[There's a flicker of a shadow across Sans's face as his unease ratchets up a few more notches before he can pull his expression back to normal.] Yeah, you could say I'm from out of town. You are too, right? [That's why he decided to talk to this guy in the first place, even if he regrets it now. Every word the guy says screams Papyrus's mannerisms at him, down to the question coming up after he got his face under control. Like he was recognized. Which is impossible, and he needs to stop thinking about it.]
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