"Not a child," Harry assures them quickly, settling into his chosen seat and flicking his wand to brighten the witchlights in this corner. Mr. Granger is squinting like the light isn’t enough for him -- it is rather dim -- and there’s no way for a Muggle to adjust the light in here. "Please, sit. He sees Hermione as his responsibility as a minor, even if she’ll age up in September."