@Xoldin In many a manga the story demands kids don't behave quite like real kids. Especially manga where there's serious fighting, danger, mysteries, and such. Realistic kids would be totally useless as anything but burdensome sidekicks. Of course in some manga it's the whole point a character looking like a kid actually doesn't behave like one at all.
I'll definetly echoe praise on how well this manga captures kids acting like kids. Like everything they are doing is stuff i recall doing as a kid or know of what others did as a kid.