In the Source Beast Continent, it was very common for weak people to be killed by those who were strong. And these children of rich families were born like this. They had long been above the others, they didn't care about the lives of ordinary people. They even thought that ordinary people weren't human. They could kill them if they wanted to. They didn't feel anything at all.
These descendants of the big families wanted to kill Lugh directly so that he would not be an eyesore. However, their strength was pretty good now. They had all reached around level 20.