They negotiate.

"Alright, so… what if I let you have some access to my **** girls, and you became one of mine at other times?" Naruto started to negotiate with Ria.

"Define "some access,"" Ria replied.

"Like… you could have them to yourself for an agreed length of time, and you could pick a certain amount you would want to have, say… five of my girls for five hours each per week? And you would be my sex **** for maybe… ten hours per week? Oh, and no abusing them."

"For that, I will go as high as two hours a week as your sex ****," Ria countered. "After all, such a deal would benefit me greatly, but not cost you your own dominant role for any length of time, other than over five girls I pick for five hours a week each. Which I am not looking down on you for mind you, it's a good deal for both of us, but obviously, I'm going to make it as sweet as possible for me for as little as possible, same as you."

"…agreed, so what will it take to say, bump it up to ten?"

Ria considered. "In addition to those five, I would want three full time male slaves of my pick."

"Only if you let them have relationships outside of that too, like I do," Naruto replied.

"…in that case, I will give you seven hours a week, and sweeten the deal by helping you get a couple more slaves, though these would be additional girls you'd have to share."

"…agreed. But the one girl you can't pick is Hinata."

"Oh come on, she's your best one!" Ria pouted.

"Exactly, she is my girlfriend as well as my sex **** in bed," Naruto deadpanned. "Other than when you are both playing that latter role, she is exclusive to me."

"…fine, but we're going down to five hours for that, and you'll have to give me a fourth male ****, though you can pick that one.

"Five male slaves, I pick out two for you, you pick three, you also get five hour exclusive access for five girls I have of your pick, though you can wait to pick for me to get others, like, pick three now, but save your other two picks for later, like for when I finish enslaving Ino or Temari, you can't take Hinata, and you also get seven hours a week with any **** girl you help me get in addition to the five you get to pick automatically, with the caveat of no abusing any of them, and you submit to me for ten hours a week, and I can call in favors besides sex as part of the ten hours, such as getting the real names of someone for me, your invisibility and other abilities I imagine would help with that, but you can't deliberately drag out the time to use up the ten hours while doing these favors," Naruto made his final offer.

Ria paused and put a hand under her chin at the bargain Naruto was driving.