I think what makes it even tougher is the japanese culture.
It would be tough in the US too but in the western country it is pretty accepted since the political changes of the 68 time that young adults revolt a little against their parents and challenge their beliefs.
In japan that is totally different, they still have a culture that even adult kids have to always respect their parents and not question them. Because of that it is much harder to break out of an oppressive environment, they always expect composure, performance and respect.
In some cases that has even lead to suicides of kids who couldn't bear the pressure anymore and didn't have the breakout opportunities of western kids.
I'm not totally condemning this. There is a reason that asians are the most successful american ethnic group ahead of white people but it can come at a high cost.
The other extreme of many western parents of not expecting anything and allowing any kind of behaviour isn't great either and some expectations and pressure can be good but what they do in Japan and some other asian countries is just extremes.