[Even without seeing Chuuya's expression, it's easy to imagine how he must look after he pulls his legs up from Mephisto's view atop the rim of his hat. But maybe it's for the best, really. Surely if Chuuya could see the look on Mephisto's face right now, he'd probably get pissed off. Not that what he says is much better--]

A power unsuitable for the vessel it inhabits... my, are you sure you aren't a demon? That's rather similar to the existence we live, after all.

[Sorry, was he expecting sympathy? Mephisto isn't very good at that. At least it's not exactly an insult to be compared to a demon coming from Mephisto, considering how highly he thought of his own kind. But despite keeping his tone light and careless as always, he's taking this very seriously. And with more pieces of the puzzle that make up Chuuya coming together, it only makes him that much more curious what the full picture will be.]

But tell me-- what if I told you there might just be a way of learning to control that power on your own. Would you be interested?

Surely someone like yourself must find it frustrating to incapable of harnessing your own power without someone there to act as your brakes.

[--because of course he wouldn't know about this power of his unless he's used it before. And seeing as he's still alive, that means he clearly knows or once knew someone with a nullification power. Even without saying as much, it's easy to read between the lines.]