Continue fucking them.

Natsu gave Virgo several moments to recover, and then helped her up. "May I serve you further Master?" she asked him.

"Yes, just a second," he replied, stepping up to the panting Lucy. Lucy looked up at Natsu, and smiled at him.

"Am I being a good maid Master?" she asked.

"Yes, you are," he affirmed, beginning to finger her pussy folds, and making her moan and bite her lips.

She then blushed as he lined his cock up with her pussy. "Ah… Master?" she asked, looking a bit nervous.

"Just let it happen Lucy," he told her, grabbing her shoulders, and pressing into her folds. She whimpered a bit at the sudden intrusion, but regardless, her entrance easily accepted him. He felt her warm folds wrapping his shaft as he sighed in pleasure.

"Virgo… come up behind me and massage my back with your tits," he ordered Virgo, as he slowly started to thrust his cock in and out of Lucy.

"As you command Master," she inclined her head, and walked up behind Natsu, pressing her chest against his back, cooing a bit as she did so. She then began to shift her torso, rubbing his back with her boobs.

He smiled and returned his full attention to Lucy, who was gazing up at him, self-conscious of her slutty behavior, and red in the face. She turned her gaze away briefly, before yelping a bit as he sped up a bit into her. He moved a hand from one of her shoulders to cup her face and turned it back to meet his gaze again. "It's fine Lucy," he coaxed her as he started to pound into her, making her gasp. "Your body is beautiful, and it's natural that your Master should want to partake in it… It's fine if you're embarrassed, but don't be ashamed…"

"Oh… Yes Master…" she cooed, wrapping her legs around him as she squirmed from the pleasure he was causing her.

Virgo smiled a bit at Natsu, seeing how well he was treating her Summoner, making sure she was enjoying this experience as well, and found herself kissing his neck. He smirked as he felt his shaft throb, before crying out a little, and releasing his seed into Lucy's waiting entrance.

"Ahhh!" Lucy cried out, tightly shutting her eyes as she felt him fill her, and his seed triggering her own orgasm. She arched her back as it went through her body, and she then relaxed, panting as he slowly pulled out.

"Well done," he told her, kissing her forehead, and making her smile softly.