It took a moment. Minato chewing thoughtfully as he listened to Harry. He wasn't sure why this seemed like a surprise, but it was kind was. One would think despite what he has experienced, it wouldn't be but. Here he was, pausing in his chewing to finally say, "...you're a wizard?"

Like, with wands and everything? That was actually really cool? Minato might be a little starry eyed as he waited for Harry's confirmation.