They do both.

"Well, it's kind of hard to believe," Ruby grinned as she reached forward with her free hand, grasping Jaune's shaft, and jacked him off while still stroking herself. He moaned, and relaxed a bit. Yang got behind him, and encircled his chest with her hands, pressing her boobs against his back.

"Honestly, this whole situation is hard to believe... try me..." he panted.

"Well, Yang found a lamp of some kind in the Emerald Forest, and it turned her into a magical being called a Sex Genie..." Ruby sighed in pleasure as she kept jacking off both herself and Jaune. "Now, she's my eager sex ****, and can grant any wish I ask for, provided it's sexual. We just wished for one of your desires that align with ours to be granted, in a way that will fit the dynamic we desired. In short... you're now my sex **** too, but still above Yang in the pecking order..." Ruby grinned.

"Ah, oh... I see..." Jaune panted as he continued to let Ruby rub his member. He looked back at Yang. "...and you're... okay with this?"

"Oh yeah, most definitely~!" Yang grinned at him. "You wouldn't believe how hot it is to be an enslaved genie slut! There's nothing I love more than following Mistress's orders anymore!"

"...okay then..." Jaune panted, deciding to roll with it, enjoying this too much to really question it... after all... his own enslavement to Ruby felt so good, and resonated so much with his submissive side that he would have chosen it freely even before the wish... after getting over his inhibitions of course. So it wasn't out of the question that Yang was enjoying this just as much. Also, he enjoyed the idea of having control over Yang, his dominant side speaking, even if his control took a backseat to their Mistress's authority.

Ruby grinned, and sped up her handjob of Jaune, feeling his cock start to throb in her hand. "Yang, I wish the floor here was clean enough to lick off of without being unsanitary... because one of you is going to be cleaning up a mess," she grinned, going faster with both hands, before she and Jaune gasped out as they came, their dicks erupting onto the floor. Yang granted the wish just in time, just before both their seeds splashed against the newly pristine tile. Ruby and Jaune panted, Jaune's dick going limp, but Ruby's remaining hard.

"Unh... that was nice, Ruby... or should I be calling you Mistress now?" he asked, wheezing a bit.

Ruby smiled and replied, "I really am liking the sound of being called Mistress lately..." she proceeded to lean forward and kiss Jaune, who moaned and returned it.