How to be a good sister 101

"I'M GONNA FUCKING KILL YOU, YOU BITCH!" Yang roared in between her vulgar moans

That verbal defiance earned Yang a backhand across the face.

Beacon's busty brawler was currently tied spread eagle on guest instructor Winter Schnee's bed.

"We need to work on that mouth of your's. You talk like a drunk whore"

A dissaproving scowl came to Winter's face. This insolent brat had dared to leave her own sister to fend for herself in a training excersise which ended in Ruby being devoured by Grimm. If it was a mission, her little sister would be dead.

After class, Winter got Yang alone and explained her dissaproval and that she should value her sister above all else.

Yang did not take well at being told how to be a sister and in a fit of rage, assaulted Winter.

The fight if it could be called that was brief. Winter was a Atlesian Operative while Yang was a mere huntress in training. And so Yang had ended up here.

Winter figured if Yang dressed like a slut then she will learn as a slut. She certainly was moaning like one at least.

While Winter's conjured phallus went in and out of Yang's cunt, the operative was learning about Yang.

Hotheaded. Vulgar. Resilient. Strong. Arrogant.

There were many angles to this brat that Winter was staring down. How could she make Yang a better huntress, sister, and person?