Yep! And Asia gets a turn!

"Well, I think we can consider Akeno's initiation mostly completed," Issei finally said when he broke the kiss.

Akeno pouted cutely. "Aw, does that mean the fun is over for me for now?" she asked him.

"Oh no, I most certainly did not say that," Issei replied, pulling out of Akeno, and having her get off of his lap. "Just that I think we left Asia out of anything but watching for long enough."

Rias nodded and released Asia, letting her stride forward eagerly. "Yes please!" she replied.

"Oh, I get you, you want a threesome, eh?" Akeno grinned. "I'm down! Let me guess, she eats your seed outta me, while you fuck her from behind?"

"Sounds perfect," Issei nodded, shifting his weight on the bed as Akeno moved to lean herself up against the head of it and parted her legs. Asia climbed in and crawled up to Akeno.

"Ready, Master," she told him, waving her rear at Issei, before leaning forward, extending her tongue much less hesitantly than she used to, and starting to lick at Akeno's folds. Issei took her invite as she waved her backside at him subtly. He gripped her hips and thrust into her, making her gasp into Akeno's crotch.

"Don't stop licking," Issei instructed Asia as he began to move, keeping a tight grip on her. His hips slapped against her ass with every thrust.

"Uh hunh..." Asia moaned, sliding her tongue into Akeno's nether lips, which pulsed around the slick muscle, almost simulating sucking the tongue in deeper.

"Unh... Yes, right there..." Akeno murmured as her hips writhed in pleasure from the stimulation. Asia's tongue wriggled inside her experimentally, searching out her sweet spots, Asia paying rapt attention to Akeno's reactions. "Wow, you're much better at this than I would have thought..." Akeno sighed contently.

"She's had practice," Rias chimed in, leaning in to watch closely with her hands on her knees, and then spoke again, this time addressing Asia, "That's it, keep going sweetie... Just like I taught you..."

"Well, that answers that," Akeno crooned, bucking her hips as she began to tease her own breasts. Issei grinned at the sight, provoked into speeding up in Asia.

Asia whimpered in bliss at all the stimulation Issei's dick was providing, almost losing focus on licking, but the collar helped support her obedience. She then pulled her tongue out of Akeno's folds, replacing it with two fingers, and licked at her clitoris instead. "Oh~!" Akeno moaned at her little love button getting another round of stimulation.

Asia giggled weakly as Issei pounded into her from behind. "Try giving it a little nibble," Rias coached her, and Asia obliged, gently biting down on the nub, and making Akeno jerk and whimper as her body shuddered in another climax.

Issei soon reached his own limit, and with a final grunt and thrust, he buried himself in Asia, and spilled his seed right into her depths. She gave a loud moan of her own as this also pushed her over the edge, her body shuddering as it was wracked by orgasm.

The three panted as they slowly relaxed, letting the tension drain from their tired forms. "Unh... That was amazing..." Asia murmured tiredly.

"Yeah... But I think I'm spent now," Issei admitted, pulling out of Asia, his member going soft.