I Have Seen Arrogant People, but Never Such Arrogant People!

Cool writing + online IQ + decisive killing! Reversal! Big reversal! Relaxed and humorous, not a Holy Mother, whoever dares to bully him will be tough! The hot-blooded fight is fun to watch, the wits battle between geniuses and monsters, looking for trouble and causing trouble without any fuss, just go ahead and do it without saying a word. The protagonist doesn't know why he came to this world? When he thought he could stand at the top and gain insight into the world. The real mystery begins!