

You can actively work on countering the negative effects, so I’d start with just a list of positives. If all the negatives were gone, which country would you choose?
Let’s suppose it’s the USA. You’re uncomfortable there, because of violence and ICE scares, but everything else is fine. You can look at local crime rates, especially gun violence. Find an area/school where these statistics are near-zero. You can mitigate the ICE risk by retaining an immigration lawyer and making sure that all your paperwork is in order.
Make the same type of list with Japan and China. What would you need to do to mitigate the xenophobia/ethnic differences? (Are you already fluent in both languages?)
You also mention finances, which should probably be near the top of the list. Figure out a realistic cost for your entire time at school, then work with your family to understand what’s doable and what stretches them past the breaking point.

<shrugs>
I’m sorry, but ICE’s activities are the status quo in many countries. This person is looking at countries like Japan and China. How strict do you think immigration enforcement might be in China? Do you figure that Japan tolerates a lot of inconsistency when filling out an immigration visa?
It doesn’t matter how things should be, only that this is how they are. Today. RIght now. Yes, the U.S. has a hard-liner in office. Yes, ICE will discriminate - the color of your skin and your country of origin matter. But that’s not so abnormal on a global scale.