[It's the inclusion of the "just" that catches his attention, clues him in that he suddenly needs to start treading carefully; the weird look and shifting gaze only add to the weight of that suspicion, and he runs a hand through his hair to buy himself time as he tries to lock down what it is.]

You mean looking for the Pikachu? No, I...just hear they're pretty friendly. It'd be cool to see one while I'm here.