First, they turn Blake into their full on Neko pet!

Once they entered the dorm, seeing Weiss was nowhere to be found, Ruby eagerly turned towards Blake and Yang. "So... how about we start by making you full cat girl?" she asked Blake.

Blake blinked. "Um, what do you mean?"

"I mean only one set of ears, and a cute tail!" Ruby squeed. "Maybe some other features, like the ability to purr, your cat parts being erogenously sensitive, oh, maybe a slightly rougher tongue for extra stimulation!" she gushed as she started stripping naked.

Blake blushed. "Isn't that a bit much? How would I hide the tail in day to day life?" Even so, she started stripping along with Ruby.

"We could give you the ability to shift back and forth without issue!" Ruby grinned, pulling down her skirt, letting her futahood spring free.

"That does sound adorable, Mistress!" Yang nodded in full agreement, cupping her own perpetually uncovered boobs and playing with them to draw Blake's gaze.

Blake gulped, before nodding. "Okay, lay the transformation on me," she consented.

"Alright, Yang, I wish Blake would turn into a complete Neko with the specifications mentioned... oh, and I guess make her back mildly erogenously sensitive too, and while we're at it, give her more catlike mannerisms," Ruby nodded as she began to stroke her shaft. "And make the transformation feel really good too~!"

With a grin, and snap of her fingers, Yang granted the wish the moment Ruby finished making it, and Blake dropped her panties. Blake gasped as she felt the magic coursing through her body, producing extremely pleasant tingles, and she sank onto all fours, blushing heavily as her cat ears twitched, her human ears shrinking into her head, the ear canals sealing shut. She wiggled her rear, and her tailbone extended with a black, furry tail that started to lazily sway even as it grew. "Nyah..." Blake meowed, before blushing heavily as she realized what had slipped out of her mouth.

Yang giggled along with Ruby as they watched the transformation complete. "You're so adorable, Blake!" Ruby grinned.

Blake couldn't help the smile that crept onto her face as she looked up, and purred at Ruby. "Thank you, Mistress, Nyah," she mewled.