[Casey doesn't question his comment- it makes sense, and he likes looking like himself, too. The brooch was fun for a few minutes, anyway, but it'd take some time to get used to wearing it for longer. He'll have to practice it at home before he shows Leo. And for Hunter there's an extra layer of complexity- someone who hates humans wouldn't want to look human for long, surely.

He's quiet for a long stretch as he waits for that pulse, brows furrowing the longer it goes on without doing anything. Once that first pulse is felt, he very nearly jumps, eyes widening, and keeps holding on as he waits for another. The silence would be too long for that, though, so while he does that-]

Wow... you weren't kidding. [It felt different, too. A pulse, but not quite normal. It hadn't felt at all like the beat of blood through a vein. He'd be concerned if Hunter didn't otherwise seem perfectly fine and healthy.] Sorry for making such a fuss... I just, uh. [He goes a bit red, embarrassed to admit it.] I like knowing what a regular heartbeat feels like, for people I know. In case something bad happens.

[He has no idea how this would work with Hunter, though. If someone checked his pulse in a hurry, they'd think he might be dead. Casey's glad he confirmed it now, though- at least someone else knows.]