Blake licked her lips as she crouched in a tree above an unusual Beowolf. Instead of the standard black bodies with white bone protrusions, this Grimm was a chocolate brown with protrusions similar to white chocolate. Yang watched at Blake prepared to pounce.
"Do you mind not watching? This is gonna be… undignified," Blake whispered to Yang. Yang shot Blake a quick thumbs up and turned her head away. Yang heard the tree rustle as Blake leapt from the tree. Then she heard the Beowolf growl and struggle, matching Blake's growling and struggling. She then heard the Beowolf start yelping like a puppy and the sound of tearing, leaving Yang with very vivid mental images. Before long, the Emerald Forest was silent again, only to be broken by Blake again. "Yang, I'm done," Blake purred. Yang turned her head and the sight that met her was jaw-dropping. The lithe form of Blake Belladonna was replaced by a mound of pale flesh. She sported hips wide enough that two or three Yangs would be about as wide. Her rear jutted out about half a meter, looking like beachballs with how smooth and round they were. Her breasts were the size of basketballs, weighing down heavily on her chest and held up only by her belly. Her belly poured down over her body, despite sticking out almost as far as her rear did, and managed to cover her core. However, that didn't stop her from looking indecent, as her clothes had all been torn to shreds by Blake's massive and almost instant growth. All of her clothes were in a tattered pile around her ankles, leaving her completely nude, with all of her fat on display for everyone to see. Every breath made her pillowy bosom rise and fall slowly as she looked up at Yang, chocolate surrounding her mouth and covering her hands.
"Holy… Blake, you're huge," Yang gasped as her face flushed red. She slowly made her way down the tree and approached Blake, making her look even bigger up close.
"My only disappointment is that this wears off after a while," Blake purred as she sashayed towards Yang. When they met, Yang reached out and sunk her hands into Blake's soft, spongy belly, a lustful, lecherous grin on her face.
"Someday Blakey, someday," Yang said wistfully.
"Well, in the meantime, why don't we enjoy this?" Blake said in a husky voice, her arousal barely contained. Yang's grin turned predatory, and what happened after that could be heard all the way back at Beacon. Fortunately, by the time Blake could feel her legs again, the Grimm's fattening effects had worn off and she was small enough to fit into the spare clothes that they'd brought with them.
"So, same time next week?" Yang asked.
"Gods yes. But next week, it's your turn," Blake stated.
"Don't threaten me with a good time," Yang flirted as she shot Blake a wink.