Nah, let's change it up.

Natsu pumped his hips a few times into Virgo's mouth, before pulling out. Virgo blinked. "Master? Am I not doing a sufficient job?" she asked, seeming a little downcast at the thought that she wasn't serving him well enough.

"Oh no, I just want to change it up... Go stand in front of Lucy, bend over at the waist, and start eating her out," he ordered her.

"Oh... Yes Master," she nodded, smiling as she stood, and walked to Lucy, who was still masturbating.

Lucy blinked and looked up at Virgo, to into pleasuring herself to have noticed Natsu changing Virgo's orders. "Uh, Virgo?" she asked.

Virgo replied, "Excuse me Princess, but Master has orders I shall be following..." She then bent over at the waist as ordered, and placed her hands on Lucy's thighs, before placing her head right between Lucy's legs and starting to lick at her folds.

"Ah! V-Virgo..." Lucy moaned, looking up at Natsu to see if this superceded his order to masturbate. He nodded as he stroked his shaft, and she relaxed, relieved that she wasn't disobeying by allowing Virgo to lick her.

Natsu walked up behind Virgo, and told her, "Great job." He then gave her ass a slap, watching the flesh jiggle.

"Mmm, thank you Master," Virgo said, blushing slightly as she resumed eating out Lucy, who was squirming a bit.

'Huh, she enjoyed that... Perhaps she's masochistic?' Natsu thought as he did it again a little harder.

"Ah... Yes Master, spank your celestial maid!" Virgo gasped, before returning to eating out Lucy again.