Endurance Training ♡

After Finn was able to lift more than a thousand pounds that the sharkgirl weighs, Tsuri felt very proud of him, but also wanted to do more exercises. So as a reward, and maybe even another form of training, Tsuri was planning to test Finn's skills even further, and since she was in such a good position to do it, she wasn't afraid to go for it.

Since Finn was exhausted, he lied on the sand for a long while, enough for Tsuri to be able to climb on top of him, and not crush him with her body, but instead place herself in a good position, to do something fun she wanted to do with Finn. And while he was still recovering from the pain his arms felt, Finn started getting nervous, even panicking to see he was going to do more exercises, but he also noticed some hints in Tsuri's attitude, as he found it odd the way he was on top of him.

"Wait, what are you doing??... I really don't think I can do anything else, specially with my arms... I think I might need to rest now..." - Finn asked nervously, as he saw how Tsuri was on top of him, rubbing her hands on his chest sensually. He thought her behavior was a bit suggestive, but Finn didn't want to assume anything, and even though he wasn't expecting this situation to turn sexual, it was obviously going in that direction.

"Don't worry, it won't be as hard as before... I just thought we still need to test some of your strengths... But make it fun, you know?... Maybe I could test your stamina, by seeing how much you can resist sexual pleasure... I feel like you could last for a long time..." - Tsuri replied, with an infectuous sensuous voice, and an erotic expression, that let Finn know everything that was going to happen. And while he was extremely nervous to be in this position, Finn wasn't too surprised by Tsuri's sexual hints, he wasn't that innocent anymore. But even though he could predict where this was going, Finn couldn't help but get scared, since it felt like the first time he met Tsuri.

"Uhh, I don't know if I would last too long..." - Finn said shyly, as he wanted to reason with the sharkgirl, who now seemed too turned on to back out. Tsuri was fascinated by Finn's strong muscles, and as she rubbed her hands on them, she felt her arousal building up, and it was clear from her lustful eyes, that she wasn't going to finish this training session without having sex with Finn. And since he also knew there was no way he wasn't going to end up doing more naughty things with girls he barely knew, Finn just accepted the sex, since lately it seemed like it was impossible to avoid it.

"I'm sure you will... but let's find out then, shall we?" - Tsuri asked seductively, as she gave Finn a lust hungry smile, after rubbing her body on his chest, and beginning to tease his crotch. And since Finn had accepted his fate, he just tried to enjoy what Tsuri was going to do with him, which seemed to be going straight to the action. Without teasing Finn too much, Tsuri lowered down his pants, just enough to pull his already hard dick, but instead of licking it, or doing any type of foreplay, she was planning to immediately start intercourse.

And while Finn didn't mind skipping one of the most important parts of sex, he was actually excited to have casual sex with Tsuri, althought there was something that was making him feel weird. He knew there must be a hole where he could put his cock in, but Finn wasn't expecting Tsuri to have one, that's why he was so surprised to feel his member rubbing against her moist sex, but he was more shocked when he actually saw what the sharkgirl had as a vagina.

Since Tsuri is a sharkgirl, her legs are conjoined, to form a big tail, that she could still use to walk on land. Finn was caught off guard by that tail the first time he saw it, but now that Tsuri was alining himself on top of his dick, he saw how between her legs, there were actual lips, that looked very eager to swallow his cock whole, and as weird as that was to him, it did make Finn more excited. So with the question of Tsuri's sex answered, they were both ready to begin interspecies intercourse, and without much hesitation, the sharkgirl lowered her body on Finn's cock, and her fish pussy let him enter inside her with relative ease.

Like always, Finn felt a bit surprised by the first contact, but since he was more experienced with sex now, he managed to hold his composture, and even resist most of the pleasure, all while Tsuri pushed down on his cock, tightly gripping it with her strong pussy lips, but also trying to be gentle, just in case he wouldn't last. But after looking at Finn's confident expression, and seeing how he wasn't bothered by having his dick inside Tsuri at all, the sharkgirl started to bounce on his dick, and see if that brought him any pleasure.

"So far you are doing great... You feel so good inside m- I mean, you are holding up pretty well, keep going..." - Tsuri said flirtatiously, as she enjoyed bouncing on Finn's large cock. But even though he was a bit embarassed by the sharkgirl's comment, Finn still didn't seem to mind the sex, and that made Tsuri a lot more aroused. He was definitely feeling pleasure, but Finn didn't want to show it, so Tsuri would think he was a master at sex, which she believed.

But to test if he could really last with sex, Tsuri started bouncing more on Finn's dick, but instead of going faster, she made big jumps, of over a feet tall, and landed on his cock, to continue their intercourse like normal. Tsuri was casually showing off her strenght, and sex skills, by riding Finn like he had never seen, which he found more impressive than anything else. The way Tsuri's fish pussy wrapped around almost the entire lenght of Finn's cock was still very pleasuring to him, so although he wanted to resist it, he started showing some signs that he was enjoying the sex with the sharkgirl, who was very excited to hear she was making Finn feel good.

"I think I could go faster, but that would be more difficult for you... You are still doing a great job though... You still feel as hard and big as ever... but now let's try another position..." - Tsuri said, with an alluring smile, but slightly playful tone, as she was both loving the way Finn's cock filled her fish pussy, but also really wanted to make him cum early. But as she stopped bouncing on his dick, and gave Finn a really tempting expression, Tsuri decided to let him choose the other position, which meant he would have more control of his pleasure.

Even though Tsuri wanted Finn to go fast and deep inside her, she just needed him to pick a good position, and it didn't matter much how fast he was, just with the size of his dick he could make the sharkgirl cum. But as Tsuri waited for Finn to make a choice, he tried to overcome his exhausted muscles, and stand up, to hopefully continue with the fun, in a simple, yet effective position. But since he was only able to stand on his knees, the only option Finn had was fucking Tsuri from behind, which meant he had to get creative. Because of the sharkgirl's tail, Finn couldn't just pound her like he would to Faranne, or Zoey, and he knew it was going to be tricky, but fortunately he found a way after a while of thinking.

Since Finn didn't want to lose Tsuri's arousal, he tried not to waste time, as he thought of a position for them to fuck. He decided to grab Tsuri's tail, pull it up so it wouldn't disturb, and that way he finally had access to her fish pussy from behind. But while Finn's cock was in the perfect level to enter Tsuri again, he had to hold her tail still, which was a bit uncomfortable to do, but it allowed him to continue having fun with her, which he didn't hesitate to do. Finn inserted his cock inside Tsuri, and since he had control now, he began thrusting at his comfortable pace, which was kind of slow, but still got Tsuri moaning, as she was being penetrated by Finn, in an amusing, and very arousing position.

"Ooohh, that's it Finn... Fuck my tight fish pussy!!... You love how it feels, right?... I need you to last for a little longer though, can you do that??" - Tsuri moaned in heat, as Finn continued to push his cock deep inside the sharkgirl's pussy, and driving her wild, as her mind was nothing but lustful thoughts for the young human she was training.

"Yes... it’s just that this position is very... tough, I'm not sure if I could last that much like this..." - Finn replied, just as distracted as Tsuri by his lustful mind, but more focused on keeping the position he was fucking the sharkgirl with. Tsuri had her face down on the sand, and her tail up, that Finn hugged to keep his balance, and while their position was quite unusual, and maybe a little uncomfortable for Finn, it was still very pleasuring for both of them, specially Tsuri, who loved getting ravished like that.

"Yea, this position feels great!... Just keep fucking me deep and you'll be fine!!... You have lasted longer than I expected, so anything past now we are doing it for the pleasure, okay??..." - Tsuri exclaimed erotically, as she knew Finn passed his endurance test, and was giving her more pleasure than she expected. So with the intention of having as much fun as they wanted, Tsuri enjoyed her pleasure, as she let Finn pound her from behind, who felt much more motivated by the sharkgirl's moans. And since he knew there was no need to last much longer, Finn used all of his remaining energy to thrust as deep and fast as he could, which was clearly going to make him cum sooner.

"Mmm... yes!! Keep going Finn!!... Keep sliding that huge fucking cock deep inside me!!... I want you to cum in me!!!..." - Tsuri moaned, as she felt her body getting hot, and being unable to resist the pleasure, she was about to reach her climax, just like Finn, who was distracted by her hot moaning, and couldn't last any longer. It took all the energy he had left, but after a few final thrusts, Finn couldn't contain himself, and squeezed Tsuri's tail, as he felt his cock throbbing inside her fish pussy, pumping load after load of his hot sperm, deep inside her, which would probably flood her womb, if she even had one.

After both Finn and Tsuri exchanged fluids, they were both very exhausted, specially Finn, who felt his dick bursting inside of the sharkgirl, so with so much power, that he lost all of his strength for a moment, and also his balance, which lead to him dropping Tsuri on the sand, and him falling right next to her. But as they didn't mind the fall that much, and even laughed about it, both Finn and Tsuri looked at each other, in what seemed like an almost intimate moment, apart from the erotic expression the sharkgirl still had. And before Finn could wonder what would happen to him, or how is this going to affect his training, he was distracted to see his own thick semen oozing out of Tsuri's fish pussy.

"Oh gosh... that's a lot of human seed, I know it is very tasty, but I love it more when it's flowing out of my pussy... Maybe you could get me pregnant, that would be great... if you become a little bit stronger, if we had babies they would be unstoppable warriors, don't you think?" - Tsuri said playfully, after being more aroused to see Finn's impressive creampie, which even though he came very deep inside her, most of his cum slowly came out of her. And while Finn was also impressed, and very turned on to see how much sperm he pumped inside the sharkgirl, he immediately felt nervous, from Tsuri talking about making babies, which he thought there was a small chance of happening.

"I'm good... I don't think it’s a good idea to talk about babies... But I do believe I lasted a long time, didn't I?" - Finn asked awkwardly, trying to avoid talking about getting Tsuri pregnant. Since he believed he couldn't impregnate girls as easily as everyone always tells him, Finn really didn't expect to knock up Tsuri, even though it was hot to have sex with her, and maybe they could do it again in the future.

"Oh, absolutely!! And it’s not all about lasting a long time though... The best part about sex is being able to pleasure each other as much as we can of course... and your huge cock definitely gave me pleasure today, so thanks..." - Tsuri exclaimed cheerfully, to respond to Finn's nervous question, and also express the excitement they share for having fun together, which made Finn smile, as he was very flattered by Tsuri's sexy compliments.

And while the tone of their conversation seemed to turn more friendly, it was still hot for Finn, to see that he did so good at pleasuring Tsuri, that she even changed her behavior, and that he could apparently make every girl he met have sex with him, just by being nice to them, doing simple tasks, training, or even just without doing anything. But now that the sex was over, Finn did want to change the topic, and move on from this very erotic training session with Tsuri...