ELI5: Explain Like I'm 5

Five Eulsa Traitors

Okay, so back in a long time ago when Korea was just one country, there were some people who worked for the government. These people were in charge of making sure the country was safe and everyone followed the rules. But then one day, these five people did something really bad. They made secret deals with another country that wanted to take over Korea. This meant that they were being disloyal to their own country and betraying their own people. People were really angry when they found out about this, and those five people were called "the Eulsa Traitors." They were punished for what they did, but their actions caused a lot of trouble and hurt for the Korean people. It's not good to betray your own country, because it can cause a lot of problems for everyone.