He couldn't refrain a high pitched whine. He was so close... Mia placed her hands on his knees again, this time resting her weight on them, and she turned to look at him over his shoulder. Pleased by the begging face staring back at her, she turned sideways and extended her leg, this time trapping his cock in the membrane behind her knee, that he hadn't even noticed she had. She moved her leg, so her membrane would slide over the head of his shaft. This felt very pleasurable, for both of them, but it had them nowhere near their climax, unlike before. Still, it was a sensation they never wanted to stop. If the rest of the time, when they weren't orgasming, it felt this good, then they'd have a very hard time ever getting out of bed again. Or sofa, in their case.
Since moving like that only made her slide across the tip, she made sure to grasp his cock through her membrane, and jerk him off slow, but on the whole length of his member. After all, her webbing was always wet, so it basically segregated the perfect lube for these occasions. Once it was fully coated, she turned around, kneeling with her legs on top of his. As she adjusted herself, he suspected this was going to be uncomfortable, but Mia was surprisingly light. This only sent his mind into a spiral of fantasies, of what he could do with her lightness and flexibility.
His trail of thought got cut off when Mia leaned in to kiss him. They moaned into each other's mouths, as she let her tongue fill his mouth, the tip peeking out to lick his lower lip. She grinded on him, pressing his cock between her ass and hand just like she was doing before. But now, after a bit of teasing, she went to grab his member from the front. She aligned it to her pussy, sighing when they made contact. Her lips were pulsating with the need of having something inside. She got the head in first, both of them moaning at this, and then she started riding him, his cock sliding in and out with ease.
He was glad Mia decided to go slow at first, so he could make sense of all these new sensations. By now it was clear she was different from other girls, anatomy wise, but up until that moment, he had no idea HOW different. Her flesh felt different from past experiences. She had these vertical lines of muscle, or layers of skin maybe, as if she had membranes surrounding her whole pussy. They reacted to each movement of hers, and the slightest variation in pace, or angle, had her flesh respond in a whole new way.
All of this was natural for Mia, of course. She knew her own body well. But her partner seemed to be having an out of body experience. She grabbed his face, his ears bulging out of her membranes, her slippery fingers leaving a wet trail on his cheeks, and she unfolded her whole tongue inside his mouth. This brought him back, as his cheeks were puffing into Mia's webbing, from having so much flesh inside. It was a long, passionate kiss, and he had to pull back, gasping for air. But she barely gave him any time to recover, going in for more. He let her have her way with him, while he traced his fingers up and down her back fin. He applied some pressure, brushing down the cartilage in her fin, and she shivered at the caresses. This was the first time someone treated her back fin as a sexy part of her, and not just something to get out of the way. It made her squirm, and press herself against her partner's chest.
He moved his hands further down, giving her ass a nice squeeze, helping her move. He stayed there for a while, but then he continued tracing the back of her legs, feeling the membranes he didn't know existed until mere minutes ago. He gave them a light pinch and pulled them, playing with how flexible they were, and how stimulating they were for Mia. She wanted to tease him too, so she varied how fast she rode him, and moved from side to side at times, her pussy squeezing his cock in whole new ways. This distracted him from doing anything else, but once he could get a grasp on himself, he went on caressing Mia's whole body, discovering the wrinkles on the soles of her feet. This time she wasn't ticklish. Instead, she seemed to be into it, so he took his chance. He pressed the membranes on the outer side of feet between his thumbs and the rest of his fingers. They were just as silky as he had felt in that brief moment, when he had Mia's foot on his face. He hooked a thumb under the membrane on the inner side of her foot, and grabbing the webbing on the other side with the rest of his hand, he brought them together over her soles, pressing them, massaging them, making Mia even more eager to ride him. He then let go of her membranes, to trace his fingers over each of the wrinkles on her soles, occasionally pressing his finger into the space between them, rewarded by Mia moaning into his mouth.
Despite how much she was enjoying the attention on her feet, she wanted to feel him deeper inside her. She shifted positions, and now she was crouching with her feet on his legs. Her toes were long, and she could move them with ease, so she turned her feet inwards, digging her toes into the fleshy inner side of his thighs. After she applied pressure on them, he got the memo. He spread his legs wider, so she could achieve a deeper, tighter penetration.
Mia felt her orgasm drawing near, which made her insides twitch and contract in yet new ways for her date. This was even more stimulating than when Mia had given him a blowjob with her mouth, hands and feet at the same time. It was like several people were grasping at his cock, trying to milk him for every last drop of his seed. "Orgasmic" fell short of describing this experience. If he had to put a word to it, he could only say... "Magical".
With their climax drawing near, he pressed the Naiad into himself, hugging her waist with one arm, and grasping her back fin with his other hand. Mia hugged him over the shoulders, not breaking their kiss as she jumped on her dick, her butt wiggling against his legs. They came at the same time, moaning into each other's ears. He shot his seed in several spurts, having one of the longest orgasms of his life. She whimpered as she squirted all over his lap, and then twitched with each pulsation she felt from his cock. They leaned back into the sofa, and they stayed there, savoring the sensations. He could feel the strands of muscle in her pussy, lapping up the remnants of his semen with each contraction of hers. Mia could feel how he still was rock hard, and the pulsations made her feel filled up and used, in a good way.
They stayed like that for a good while, until he broke the silence. 'So... Do we declare this a draw, or what?'
Mia groaned, and pressed a pillow against his face, as if smothering him. She would've sworn she could out-fuck any guy. They always ended up as quivering messes, while she stayed fresh, laughing, able to continue all day if needed. The guy pushed away the pillow with a smile, and sighed as he brushed her backfin, as casually as if her back was completely normal. She cuddled up to his chest. Maybe she just hadn't known someone as interested in her pleasure as she actually needed. Hopefully, she thought, this was the start of something great.
