[Lucio wasn't exactly trying to buy anything, he was moreso just harassing the vendor who typically acts as something of a go-between when it comes to the Count and some of his more... Shady work around the Down. Needless to say he doesn't appreciate business being interrupted, and he likes it even less when the voice in question instantly makes his blood ignite with rage and he turns with a sharp efficiency that is both dramatic and threatening.]
You. What are you doing here? [Because you should still be a ghost.]
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You. What are you doing here? [Because you should still be a ghost.]