They chat some more, and Lucy has some ideas.

"So, how are we going to tell this to the Guild?" Natsu asked as Lucy sat next to him, idly stroking his cock as she had her tail back, which was undulating in an eye catching way.

"Hmm, well, we can always use a wish to ensure the Guild knows I'm fine with this," she remarked. "You might want to make a wish to protect the lamp though, someone might actually get greedy."

"...I wouldn't mind lending your powers to other members of the Guild actually, so long as I always get the lamp back," Natsu remarked.

"Fair enough, just better make sure of it," Lucy noted, feeling his shaft hardening in her soft hand, and she smiled softly at him.

"So, how can you make pregnancy more manageable?" he asked with a soft moan, out of curiosity more than anything.

"Oh, lots of ways, for example, I could shrink the child in my womb down to ensure they don't hinder my movements, or make my womb into a pocket dimension for the fetus. Lots of ways to avoid an unwanted baby bump. I can also get rid of stretch marks with ease," she added. "Just in case you'd like me to showcase the baby bump from time to time. Also, I can make the process take less than nine months, and even make childbirth feel pleasurable instead of painful."

"Huh, how about that?" Natsu moaned as she continued to idly stroke his cock. "We're still waiting on that though, but it's nice to know it doesn't need to be so inconvenient for you."

She giggled. "You know, we could also work on including some others into our fun," she purred in a seductive tone.

Natsu paused. "What do you mean?" he asked, wondering where this was going.

"Master, I mean that the Guild, and other places, have a lot of sexy ladies, or guys if you're into that too, who would all be eager to enjoy the delights of a Sex Genie, especially if we bypassed societal indoctrination that makes them slut shame themselves! We could easily build you a willing harem, or even just a group of friends with extra benefits if that's what you would prefer~!" she grinned, caressing his nutsack with her free hand.

Between her attentions, and what she just said, Natsu's brain short circuited. A harem!? Just for him? That was... actually tempting to think about.