It's strange. Like most interactions with Fox, he doesn't know how to react to him. Granted, it isn't unusual for him to feel uncomfortable socializing, but it's rare for him to be this unsure of how he feels about someone. He's acutely aware that in the past, he's been manipulated into things as soon as his family is brought up, and he's agreed too quickly to all sorts of bad deals out of desperation. Only this time Fox is offering to help seemingly for the thrill of solving a problem. And that... at least makes some sense to him.

Is that what this is? Finding something in common in someone? That doesn't seem right, but the more he goes on, the more interested Five is to know. The theory is simple when it just involves accepting that magic makes it happen, but he needs more than the dumbed down version when it involves his sister.

When he comes out and offers to teach them, he finds himself nodding.

"I'll talk to her." Apparently he's going to actually take this into consideration. It's risky, and he might regret it, but he's right. He can only shield his sister from so much and she doesn't have the time to figure this out on her own. So he huffs out a breath and tries to ignore that pit growing in his stomach.

"Don't start anything without me."