All of Us are dead

Out of my own experiences, there are two things you should never do: 1. Don´t be an asshole and bully people. Why? Exactly, because then you are an asshole, and if you are an egoistic asshole then don´t do it because it can backfire!

2. Don´t be unpolite to korean girls, otherwise it can be painful.

Both are things you will also see in "All of Us are Dead" an entertainment drama show from 2022.