with gusto. Feeling so powerless underneath her sister only turned her on more, as she was reduced to nothing more than a writhing mess underneath Ruby.

It wasn't too long before Yang could feel that she was close, the stimulation and powerlessness becoming too much for her.

"M-Mistres-ss, PleA-AsE-E" Hearing Yang ask her for her release like a bitch in heat only made Ruby that more excited to make the moment last.

"No!" As she started putting more force behind her thrusts. "Not-t until I d-do. We'll c-cum together, you unders-S-stand that you bitch?" She made sure to accentuate the last part with a slap in the face before getting back to her work. The pleading look in Yang's eye turned her on more than she thought, and only seconds afterRuby felt the same feeling in her gut.

"Shit-Shit-Shittttt, I'm-m GonnAAAAA!" Ruby had cum so hard, she almost forgot where she was, but she was conscious enough to remember who she was in control of.

"NOW CUM FOR ME YOU FUCKING WHORE! CUM FOR YOUR MISTRESS!" As if on queue, Yang had arched her back as far as possible with her binds, unable to even comprehend the orgasm that would've come from being fucked by her sister. Ruby herself hadn't stopped then either, going until she and Yang both happened to simultaneously reach a second orgasm.

When Ruby finally couldn't move anymore, she had collapsed on top of Yang in a sweaty, nearly unconscious heap. She did however use what little of her energy to untie her new slave, and set