Karim moved with numb disbelief to fish out his cred swiper, a jeweled card he'd had since he was eight, that linked directly to his family's bank account.
"Leaving so soon?" the shopkeeper said, ever the salesman, trying diligently to upsell. "You should stick around to see some other stock. Like this beaut, for instance, if you have the coin for her."
He brusquely unlocked a glass showcase where the priciest items were kept, and flicked open the velvet black box to show it to Astra.
Inside was a cock ring with ominous glyphs painted over it, encrusted with jewels.
With it, there was a second ring, this apparently for a finger. It wasn't ostentatious, a simple silver ring, but there were glyphs on it, too. "Allow me to demonstrate on your slave."
"What? No! Stop, I'm not putting that on!"
The shopkeep, in the same brusque way one shears a sheep, yanked down Karim's britches and underthings. Karim stood stunned by this action, and a moment later the ring had been slid smoothly up his cock, to nestle right at the base. Once it was there, a slight whirring sound rang out, and it tightened to fit Karim's flesh exactly. Karim tried to push it off, scarlet with embarrassment, but it didn't budge.
"So this works - " The shopkeep slid the ring up his own hand, temporarily. " - by sending signals directly to the nerves. It has a number of settings." He tapped the glyphs on the ring, and a menu appeared in the air. "The cock ring cannot be removed without inputting it so in the ring - well, the Master's ring's - menu. It can do handy things, I'm telling you, terribly handy. For example, pleasure." He tapped that menu item from the floating choices, and Karim squeaked. Suddenly he was red as a beet, and trembling. He'd been trying to hide his cock with his hands - now it was suddenly achingly erect, and his fingers instinctively began to grip it. The far-off, decadently beautiful look on his face, not to mention the embarrassed groan he let out, made the shopkeeper convinced this was a guaranteed sell. "Edging - " Karim's knees buckled and he fell back into a display, shaking wildly, his eyes glassy and desperate, moaning pitifully like the slut he'd been called. "It keeps him at the very edge of orgasm, but he can never cum until you turn it back off. Naturally, cumming is an option." Immediately on the dial change, Karim came, hard, moaning, tears starting to stream down his face from humiliation. He pressed his knees together, cum cooling on the floor of the shop. "He has no choice but to cum when you choose that, even if totally flaccid. Naturally, you can select that option as many times in a row as you'd like." He proclaimed confidently.
"Of course, those are the gentler options. It also includes pain - " With a touch of the menu, Karim suddenly wailed, writhing in the remnants of his own cum, his face twisted by agony. " - electricity - " Karim arched his whole body off the floor, yelling hopelessly. Thank God for the tinted windows, they could see out but nobody could see in.
"Constriction." Karim's eyes nearly crossed, a high-pitched squeak leaving him as he suddenly curled fetally, clutching his family jewels.
The effects were deactivated. "And a few more settings I'll let you discover on the way. It's lovely because it's very discreet, and you can use it in public. What do you say? He can wear it out, if you like it."