@greatninja3 It's not about people being nice, it's about trusting that a complete stranger won't try anything funny when you are a little girl (or fake little girl) naked and alone in his house and he is an old man who doesn't seem exactly weak.
So uh is this the first time we've seen nudity in this manga? It's been a while so I've forgotten but... wow. Nice. And that'd make her like, 16 or 17 right? Perfection.