Racism in Japan is when some people in Japan treat other people differently based on where they come from or what they look like. This is not a nice thing to do because everybody should be treated fairly and nicely, no matter what they look like or where they come from.
In Japan, some people think that they are better than others just because they have a different skin color or come from a different country. They might tease people who are not from Japan or make them feel unwelcome. This is not a good thing to do because everybody should feel welcome and happy in Japan.
It’s important to remember that racism is not just happening in Japan, it happens everywhere around the world. It’s important to be kind and respectful to everybody, no matter where they come from or what they look like.