End of the school day

After school, Monica went home with her older sister Danni. Danni has long hair turned white from the stress their parents placed on them about their grades. The two girls arrived home at their manor there their mother was waiting for them.

"Monica, the school told me, you got a B grade. What do you have to say for yourself?" asked their mom.

"Mom, its just a B" said Monica.

Monica's mom slapped her.

"I expect an A+ on everything, you piece of shit. You don't see Danni getting Bs. Take off your clothes. Its time for your punishment." said Mrs. Smith.

Monica knew the routine. She stripped naked and handed her belt to Danni. She then bent over the desk.

Danni smiled. She had been in competition with her sister for her entire life. In fact, their mother merely conceived Monica as a rival to motivate Danni. Naturally, Danni enjoyed watching Monica get punished, especially when she got to actively participate in it. She swung the belt down.

SMACK!

It hurt Monica's ass.

SMACK!

Monica cried out in pain.

SMACK!

It wasn't long before Monica was sobbing.

SMACK!

"You know, sis, one day its gonna be you naked and bent over this desk being spanked with your own belt by me." said Monica.

SMACK!

"Not a chance. I am far smarter than you." said Danni.

SMACK!

Monica screamed in anguish.

SMACK!

After fifty smacks, Mrs. Smith told Danni to stop. Monica had collapsed to the ground, still sobbing in pain.

"You will remain naked until your grades improve. You're an embarrassment to this family. Why can't you be more like Danni?" said Mrs. Smith.

Monica got up and walked over to her room. Despite her family's wealth, she and her sister had very spartan rooms as their parents didn't want anything to distract them from their studies. They didn't even have beds, the sisters were both expected to sleep on the floor. Since she was getting Bs, Monica had to leave the door open, meaning anyone invited in could see her naked. Monica tried to enter her room when her mother shouted at her.

"What do you think you're doing? Until you fixed these embarrassing B grades, you sleep outside."

Monica was made to stand outside naked, her hands behind her head and leg spread out. She was to stay in this position for hours before being allowed to sleep.