Okay kiddo, let me explain what Unit 81 is. You know how in your school you have classrooms where you learn different subjects, right? Well, in a big building or area with many rooms, there might be a group of people in charge of keeping everyone safe and solving problems, kind of like a superhero team. Unit 81 is one of these teams, but instead of a school, they work in a big building called a hospital.
Their job is to make sure that everything is running smoothly and everyone is safe. They help people who are sick or hurt, and they work together to solve any problems that might come up. For example, if someone gets lost in the hospital, Unit 81 will help find them. If there is a fire or other emergency, Unit 81 will help make sure everyone gets out safely.
So basically, Unit 81 is a team of heroes who keep a hospital safe and help people. Just like you have superheroes in your favorite movies, hospitals have their own superheroes too!