[ It's difficult to mask their slight unease when he says that — they certainly shift a bit uncomfortably, swallowing thickly when he utters several thousand years. Inhuman. It might at first seem that they're merely scared of the idea of meeting someone that's not a human, or someone that could be that old, but it becomes clear very soon after that that's not the case. They shake their head once. ]

...Um, you're not the first. There are beings like that, where I come from...

[ Some that they know a little too well. They can't help it; their experience with powerful, long-lived beings like that are all firmly negative, and it makes it hard to divorce their personal feelings from assessing the person in front of them. At the very least, it does explain why he might have had more trouble guessing their age - and he doesn't seem particularly hostile or cruel (lmao), so maybe they're overthinking things. Maybe he's just immortal and doesn't have an innate drive to destroy things, as witches do??? ]

Witches can live that long, too... I-I've met some. Before here.

[ That last bit likely comes off as a bad lie due to their hesitant words and nervous glances, even though it's technically the truth — they're not sure about going around telling other people about being like, related to such a being. It's important to keep a low profile for now, probably... especially in front of someone they suspect is in a similar league of magically powerful as their mother. ]