The canteen was busy now, you decided to go to the canteen a few moments after the bell rang. You don't like crowds, you go to the canteen when it's not too busy there.

Tring! Your cell phone beeps indicating an incoming message, "Did you pay your friend's fees?"

You were confused and looked back, there was a man showing the message. Ah, apparently the troublemaker in your class wants you to pay for the food he bought from the canteen.