the protag is a strong boy with good aptitude the whole world goes mayham . monsters come out of hole classmate kill each other to get powerful in the first chapter it has a system where you can aquire point to assign to power the protag has a title king with no subordinate he was bullied in class he didn't fight back
this too vague of a description. there are many novels such as this. you have to be more clear, and provide details for others to help you.