Japanese children seem to be "naturally" predisposed to good manners, as if they did not even need to learn from their parents.
How come they listen to their parents following their instructions with obedience and precision, can they remain seated in a composed way for a long time even if they were not small automata? Japanese children are not born well educated, but it is the particular education they receive to make them exemplary children - at least in terms of education - as many Western parents would like their children to be.
Here are the "secrets" of this educational system.
Shitsuke, or discipline.
Japanese parents have a very special way of dealing with problems with their children: they do it privately. You will never see a parent scold his son aloud, even after he has made a big trouble. Privacy comes first and foremost, but it is not just a matter of confidentiality that in Japan you prefer to postpone discussions at home or otherwise not in a crowded place: staying alone, in a sheltered place avoids feeding the baby's ego and also that of the parent.
The two will face the discussion with more calm and rationality, avoiding also to annoy other people or to give wrong impressions.
Punish behavior, not the child.
In Japan, when a parent takes back the child, he always focuses on condemning the action, not the child: he will not say "You were a bad child", but "What you did was very bad". This is to ensure that the child does not develop a defensive reaction feeling personally attacked.
Moving attention to the gesture, moreover, the child is informed of the possibility of doing otherwise: he will understand that as he was capable of doing evil, he is also capable of doing good.