@twinklecake yes I am American, so when speaking of experience I felt it was important to know the context I'm drawing my observations from.
Any given singular example is not particularly irrelevant to a statistical tendency, so you're also dumb by trying to make yourself relevant there. You're talking about your own parents, two specific people out of 7.8 billion, presented from the blatantly biased and therefore unreliable perspective of their offspring, to somehow counteract a point I'm making about a country famous for its people overworking themselves to the point of physical and/or mental failure and the cultural origins of this phenomenon and then not even really addressing the point.
Normally this is the case, but you in fact pointed out two specific children, in the manga, as being an unrealistic portrayal of reality. Thus, to prove you wrong, I just needed a single real life example to disprove your claim that these two children behaving and apologizing to each other was unrealistic. For disproving a claim, all you need is one counterexample. If your claim is that generally, kids are not this mature then you may be right, but in Japan, this level of maturity in children is a lot more common than what we might see in Western civilization.
It's also fully irrelevant to the phrase "children are meant to be a handful" because a kid who's being quiet and doing as they're being told is utterly different from a kid who doesn't need to be paid attention to.
You're moving the goalposts. Who said that children need to be quiet and do as they're told? The manga scene just had children apologizing to each other and you said that was unrealistic. Children can be free, expressive, happy, while still being mature and admitting their mistakes at the same time.
As for saying kids can be more mature than children, yes, technically they can, but if it's something that happens to the degree where it's anything but an extreme minority of child-adult pair comparisons, obviously something is wrong with either the children you know, the adults you know, or you just don't really understand the meaning of the word "maturity".
When you've been to the ghetto, the projects in America, you can see how tragic the case of "adults" are. If you had the slightest amount of respect, rather than insinuating that I don't understand maturity you could have just asked me how I defined maturity. I define maturity differently depending on the context, so in a child vs adult comparison, I'm obviously not using maturity as in an accumulation of life experiences. In this case, I'm using maturity as someone who can admit wrongdoings, has emotional control, acts selflessly, and demonstrates empathy. Japanese parents and their collectivistic society all reinforce these values, so seeing two children apologize to each other is nothing "unrealistic". You changed the argument to be Japanese childrearing behaviors are harmful, which can be debated, but all I was saying was that the two children acting mature is normal and should be expected when parents invest a lot of time into their children to instill good values.
Anyway, aside from the blatant disrespect it was an enjoyable discussion. I'd like to stop it here as I believe we've already said most of our points.