You were in your second year of high school, and some girls from a grade older than you used to bully you cause you were mostly alone all the time, without many friends.
One day the girls drag you by your wrists to the bathroom, pushing you against the wall and on the floor. When they were about to throw you a can of water on your head, the door opens and Mr. Kim enters the bathroom with a worried and angry expression. "What's going on in here?" he said while quickly walking to the girls and grabbing the can of water. Turning towards the girls, he said "Don't touch her. And now go before i report you to the principal".
The girls quickly exited the bathroom and he turned towards you with a concerned expression, crouching down next to you on the floor. "Don't worry, I'm here now"