He does!

After a moment, he looked at Ruby and asked, "Are you okay with me outright sucking you off?" Ruby giggled and nodded.

"Of course! In fact, I would appreciate it!" she assured him. He gulped slightly, his face flushed, before he leaned down, gave her cock a final lick, and then engulfed it in his mouth. Settling in, he put his hands on her thighs, and began to bob his head, sucking on her futahood.

"Mmmmnh," Ruby crooned as she leaned back on her hands, biting her lip and gazing at Ren. "Oh, that's nice... thanks a bunch for it!"

Ren hummed around her shaft, enjoying himself a surprising amount, increasing the suction as he squeezed her thighs a bit. She bucked her hips slightly into his mouth as Yang watched and patted his back.

"That's it, no need to be embarrassed, just do what you find fun~! So long as it involves other consenting adults of course!" she chirped at him, encouraging him to give her Mistress more and more pleasure.

He responded by sucking harder, and bobbing his head faster, realizing he wasn't being judged, and there was no need to worry about any sexual taboos that made no sense due to hurting no one. Ruby bucked her hips and reached forward with one hand, caressing his hair, and took a moment to marvel at how smooth and well kept it was. He definitely took good care of his appearance, more than most men did.

When her shaft began to throb, Ren only hesitated momentarily, before he resumed with gusto. After just a few more bobs, Ruby crooned and erupted down Ren's throat, making his eyes widen a bit, before he gulped it all down. She then let him pull off, panting. "Wow, that was nice. Was that your first time sucking a dick? You're a natural," she teased.

He blushed faintly, but nodded slightly.