Lisanna wants to be a sex slave with some limits.

Natsu blinked as he processed the information that flowed into his mind from his recent wish to Lucy. She had been right: Lisanna was very submissive, sexually speaking, and enjoyed the prospect of letting Natsu take the lead, and found the idea of being pushed a little bit outside of her comfort zone to be arousing. That wasn't to say he could outright do whatever he wanted with her without issue, mind you, she was still leery about anal sex, or outright public sex for now, that blowjob under the table having been her limit, and there were of course things she would never do, defecation play and necrophilia being near the top of said list.

"...wow, Lucy wasn't kidding about you being a submissive," Natsu grinned once he had processed all of it. Lisanna blushed.

"So... What are you going to do? Wish to make me your sex slave, seeing as I kind of think it's hot?" Lisanna asked as she looked away. "A compulsion to obey your sexual orders... Does seem arousing..." she admitted.

"But of course, you'd want there to be limits to what I could make you do, right?" Natsu inquired.

She bit her lip and nodded. "Yeah... So long as those boundaries are respected, I think this could go very well..."

Natsu nodded and looked at Lucy, who was grinning from ear to ear. "Master, given Lisanna's ability to turn into cute animal girls, might I recommend a bell collar, since I bet cat will be high on the list?" she teased, making Natsu sputter a bit. Lucy actually giggled at seeing Natsu caught flat footed.

"...okay, yeah, sure," Natsu nodded. "Alright, I wish for Lisanna to have a collar that compels her to follow my commands, within her own limits of course. And I also wish she had an inability to remove it without a safe word that she will only be able to recall should she need to do something and not want to get distracted by potential impromptu sex, that's important..."

Lucy nodded fervently as she snapped her fingers, and Lisanna gasped as the collar materialized around her neck. "Granted!"

Lisanna lightly trailed her fingers over the collar, pink in the face, but smiling. "...so... What would you like to make me do first, Master?" she asked, looking at Natsu with some nervousness, but also obvious excitement.