[ He's slightly surprised that Matt agrees so easily, since mentioning it offhandedly had really been a way to try to lead into the question he most wants to ask. Sebastian isn't actually opposed to talking about his contracts and how they work at all, and he knows well that they're a subject of fascination. But perhaps that's why Matt lets it drop. He may know such answers already. ]

...Well. It may be somewhat forward of me, and so there is no pressure to answer should you not wish to.

[ Of course, he very much wants to know. But with politeness is always put forward first, especially since he wasn't able to ease into the topic like he had been thinking. He cants his head lightly to the side as a curious gesture, but his eyes fall on that faint scar on Matt's face. ]

You have met my kind before, I take it? That is an exceptionally rare thing, at least in my experience.