Today is a bad day for you; you're late and punished outside the class, your math homework is left at home, and the buffet food in the cafeteria is already gone. So, you have to pay extra for other food.

To make it worse, it's the first day of your period. Your stomach is cramping, and you can only sit while hugging your stomach in the cafeteria, waiting for the food you ordered to arrive.

"There, eat it."

Aaron, your rival in class, places a chocolate bar in front of you. You exchange a cynical look.

"No need."

"Oh my, should I pat your tummy to make you feel better?" Aaron laughs, teasing you with sarcasm.