So in Japan, they have a system called the "judicial system." It's kind of like a big game with rules that people have to follow when there are problems that need to be solved.
So let's say you and your friend are playing with your toys and your friend takes one of your toys without asking. You're upset and want it back. You go to a grown-up, like your mom or dad, to help solve the problem. In Japan, people go to a court or a judge to help solve their problems.
In Japan, there are different kinds of courts with different levels of power. Kind of like in a game, where certain characters have stronger powers than others. There are basic courts, where small problems like your toy issue would be brought up, and then there are higher courts that handle bigger problems like crimes committed by adults.
Also, in Japan, they have a belief called "innocent until proven guilty." That means that even if someone is accused of doing something wrong, they are still considered innocent until a judge or court decides they are guilty after hearing all the facts.
The judges in Japan are also a bit different. They wear black robes, like wizards, and have their own special language they use to talk about the law. They also don't use a jury, like in some other countries, where a group of people decide if someone is guilty or not. Instead, they rely on the judge to make the final decision.
So that's a basic explanation of the judicial system in Japan. It's like a game with rules that people have to follow when there are problems that need to be solved. It's important to follow the rules and trust the judges to make the best decisions.