Obviously we need some toys and gear.

"I'm turning this one into my obedient little toy" you tell the larger man. "Obviously we need some slutty lingerie, some handcuffs, and some toys. What do you recommend?"

The bearded man looks Sofia's slender body up and down and stroked his beard, thinking for a moment.

"She like anal?" he asks, looking at you.

"She takes all of me up that sweet ass of hers with no problem" comes your bold reply.

"Well then, I'd definitely recommend a butt plug, and some anal beads. She can wear the plug to get ready for you, or you can make her wear it out in public so she remembers who she belongs to. The beads are good so that when you're fucking her pussy, you pull them out just as she's about to orgasm, it should definitely make her cum harder."

Your eyebrows raise as you listen. Clearly this man is experienced, and knows what he's talking about. You didn't even think about that possibility.

"I like that idea" you say, turning to Sofia. "Do you like that?" you ask her.

Sofia shyly nods her head yes as another drop of cum leaks from her well used pussy and splatters on the store floor. The man nods at you and steps into one of the aisles, quickly retrieving a set of 3 different size butt plugs, and a set of anal beads.

"Nice" you say. "What else?"

"I think you should invest in some quality lube. You can fuck her ass longer or have her wear that plug without worrying about her going dry and hurting her. As for the handcuffs, have you considered leather wrist cuffs instead? They won't dig into her wrists and cause pain but will keep her properly restrained all the same. They're also easier to adjust and have more length options so you can choose to allow her some freedom of movement if you wish."

Your eyes light up. "Sounds good." You watch as he turns back into one of the aisles and grabs some wrist and ankle restraints, and a nice sized jar of lubricant. He shows it to you.

"This is the good stuff, you can keep fucking her ass for hours with this greasing her up." He eyes you again. "You're up to a little over 100 bucks now, plus tax, what kind of budget do you have?"

You open your wallet and count out the money you brought with you. Your savings from Christmas and birthdays. "About $220" you say.

"That won't go far once you start getting into stuff like pleasure swings, high end toys, and fancy lingerie, but look around the store and see what else you can find and maybe I can cut you a small discount."

You nod your head, and Sofia obediently follows you through the store. You follow her gaze, taking note of anything she seems to pay attention to. You want to buy some things your little sister wants so she can have fun too. Her eyes linger on a small pink vibrator, rotor type, like the kind used in anime. That could be fun.

"You want this Sof?" you ask her.

"Mhmm" comes her reply as she wraps her arms around your free arm, holding you close.

The rotor goes on the pile of stuff at the register as you go back for more. Over the next several minutes, you pick out a slutty French maid outfit for cosplaying, some nipple clamps, a combo set of stockings, garter belt, and crotchless panties, a blindfold, a ball gag, and some nylon rope. You bring all this to the register and lay it out. However, out of the corner of your eye you see something that catches your attention.

Walking over to it, you see a small stand with a bunch of different collars on it. The one that catches your attention is a choker that has a red heart shaped plaque on it. The words "Breeding Bitch" are stenciled into the metal. You grab it and smirk to yourself, your cock getting hard again at the implications. It's perfect.

"Hey Sof, will you wear this for me?" you ask, showing her the collar, and gauging her reaction.

You see her face flush again, and she looks up at you for a moment, then takes the collar from your hand. "Okay" she says, putting it on, and arranging it so its in the proper position. She hugs your arm again as you walk over the register and the large bearded attendant who is waiting on you.

Seeing this slender 18 year old who looks even younger than her years, clinging to you possessively while wearing a collar that says "Breeding Bitch" the attendant again lets out a whistle of disbelief.

"Kid, you have no idea how lucky you are. There are guys, and even some ladies that drop by here who would eagerly pay thousands to experience one night of what you're probably getting" the man says, starting to ring up your purchases.

"Yeah, isn't my little sister the best?" you say casually as Sofia squeezes your arm again.

The attendant nearly falls off of his stool while ringing up your purchases as the words finally register in his mind, an incredulous look crossing his face as he stares at you again. "You're fucking with me" he finally says after several speechless moments.

Sofia nods her head in conformation, just in time for another drop of your cum to leak from her smoothly shaven pussy and splatter on the floor. You give him a smirk in response.

"Holy shit" the attendant says, finishing ringing you up. He looks at the total, its over $300 and you only have $220.

You frown, thinking about what you're going to have to put back. He sees the look on your face and realizes what you're thinking.

"I'll tell you what" he says, getting serious, then looking around to make sure no one else is around. "You're short, but I can give you my employee discount. That should make up some of the difference."

"The catch?" you ask, wondering where this is going. You can already picture him asking to fuck Sofia for it, which you'd certainly decline.

You watch as he pulls a card out from a secret compartment under the desk. He slides it over to you as you and your sister look at it. The jet black card simply has "Euphoria" written on it in fancy silver cursive, with a phone number under it.

"We run a BDSM and Swinger's club. Invitation only. Very low key. There are some fairly wealthy members. Normally I wouldn't dare invite two people as young as you to the club because people your age tend not to know how to be discreet and end up running their mouths. However, given the taboo nature of your own relationship, I think its worth the risk."

"Oh?" you ask, pondering the the possibilities. "Well I'm certainly not stupid enough to go around blabbing about other people's affairs and attracting attention to my own perversions" you say, reevaluating the shop clerk.

"I knew I had a good feeling about you" the clerk says, smirking. "The head of the club is a woman. Mid 30s. Very attractive, well educated, and very wealthy. She has her own specific kinks, but that would be for you and her to discuss. Given your relationship with your sister I know she'd love to meet the two of you, especially because you're both attractive. All you have to do is show up Friday evening, around 8 PM. I'll be here, to let people into a secret back door."