Well, then that would make it a rather difficult deal to strike.

[ Sebastian's answer comes easily and even with a little, amused laugh, but he's also just secondarily impressed at her balance. It's not bad at all! He does wonder if perhaps she isn't human either, but it doesn't feel like the right question now. There is a second way to get a fair idea of that answer, though, and it’s luckily quite relevant. ]

Few creatures do not have souls, however. Where I am from, it is necessary for anything close to a personality.

[ He gives a languid shrug before he draws back out of sight, though it’s only for a moment. Since he’d been looking directly down at her, he thinks he’d prefer an angle instead if she’s chosen the lantern pole as her perch, so he leaps easily from one rooftop to the other. So now looking down her way more directly, he gestures generally down towards her. ]

I am also able to see them, that aside. It makes the confirmation very simple.