Futanari Twingle Endurance Test

Sup, my name is Sarah and I'm a well-endowed futanari, living in futanari-female modern world, where most of things are resolved either by busting futa's testicles or having sex. Yeah, it's pretty wild.

I'm 6 ft (~183cm ) tall and I have a really fit body, which is a result of me being a kickboxer. A champion in fact! So I have a ballbusting fetish and an incredible endurance, which enables me, a futanari, in that line of job, to survive. Most of my opponents are female, since in a futa vs female fight, it's pretty easy to determine who will win...

And let me tell you, my targets... Are pretty large.

I have a more than a foot long cock, almost reaching past my knee, and a juicy pair of ripe orange-sized testicles, which are the most common target when I fight. Of course, nutshots and cuntshots are allowed, because it's hilarious. ... For the audience.

So as for my other features, I have long, honey-colored hair and a cute bangs, plus sky-blue eyes that make me, as my girlfriend Monika says, really pretty, so tee-hee :3

So last week, I went to a free-entry paintball tournament and meet a really darn cool girl named Yuki. Yuki is a martial artist, and one of the best in this country as I found out online!

We talked a bit and she gave me permission to visit her dojo, promising me an endurance test! I was excited to see her again!

It was quite late when I phoned Yuki and settled to meet her the same day. The night was still young when I set foot out of my blue Ford Edge 2.0 SUV and went towards the dojo building.

Today I was wearing a white hoodie with yellow shirt underneath and a pair of boxing shorts with no underwear. Believe me... there are no panties in the world that can fit my huge genitals... nor a protective cup that could spare me some nutshots on the ring.

I approached the dojo and knocked on the door, looking around. It was quite cold and there wasn't a single soul around, only me and the lovely owner of the dojo, who just opened the door.

"Yuki! Hi, good to see you." I smiled seeing Yuki again. She told me on the phone that she decided to have the first lesson with me alone, so she could see what a kickboxer like me was capable of. That was a smart decision since I already seemed tough, so having a little alone time with a fighter like me and assessing my capabilities would be best made when the dojo was empty, hehe.

"How are you?" I asked, reaching with my hand to shake Yuki's. But then, my eyes slid down as Yuki was wearing only a loose, white crop top with a lot of cleavage and short shorts, both so short that you could see the bottom part of her large breasts and perfect ass, "You- look... good." I added, blushing a bit. I tried to look up at Yuki's beautiful, purple eyes and maybe even focus on her scar that went through her left eye, but I just couldn't! That scar was badass though and added a lot to her character. She was a really strict person, which only sometimes shows her soft side. She was focused, devoted and skilled!

Yuki's hand covered by training bandages went up and she shook my hand, smiling a bit, "Hey Sarah. Thank you... I'm happy you came." She looked so mature and sexy! Goddess, her curves were just heavenly... and she had such pretty, short purple hair to prevent it from bothering her in fights, nearly reaching her shoulders.

She then turned around and walked into the dojo, while I was left dazzled, observing her giant ass cheeks jiggling up and down as she walked, her hips swaying, making my loose dick and nuts tingle at their sight.

Yuki stretched her arms and rolled her shoulders, "Well, let's get down to business, shall we?" She said after I followed her to a large, japanese-themed training room with mats on the floor.

"... wha- Yeah! Absolutely!" I gulped, trying not to blush or sweat too much, but Yuki was truly stunning... I don't know, I just have a knack for shorter women it would seem... Yuki was 5'1" (~154cm), so she was considerably smaller than me, and her God-like hourglass figure just made her really, really breathtaking.

"We'll begin with some meditation and stretches then. And after that, I think we could do some basic skill set training. What do you say?"

I finally came out of my daze and shook my head.

"Huh?" I smiled, "Well... Actually... I recall you calling me... 'vulnerable' back then at the paintball tournament... I think I need to prove it to you that, in fact, I am much tougher than you think, miss Yuki!" I raised an eyebrow, looking at Yuki and smiling confidently.

Yuki chuckled and turned to me with a smug smile.

"Getting cocky, are we...?" Then, the smile disappeared off of her pretty face before she said in a very serious tone,

"Are you entirely sure?"

I gulped, there was something quite... menacing about her now... Well, should've expected she'll be really serious about all that.

"Y- Yeah, sure. I'm a kickboxer. You can throw anything at me." I continued to be smug. Sarah Ripe don't take no shit from nobody!

"Do you think I'm some easy to break futa?" I laughed, "How would a gal like you break me according to you...?" I teased the experienced martial artist... which was a mistake now that I think about it...

Yuki became complerely stone-faced as she looked down at my crotch.

"I feel like there are A LOT of ways to break those- I mean, you." Yuki looked me in the eyes, "Did you know that there are over a 100 martial arts around the world that focus solely on disabling a futanari? Knee strikes, clinches, locks, punches, twists, squeezes..."

I blinked and blushed a bit. I knew there were some techniques, but over a 100? Wow...

"All because you futas are so overzealous when it comes to what's between your legs." Yuki made an all-knowing, confident face, crossing her arms beneath her ample breasts as she closed her eyes and raised her eyebrows, "You ask how would I break you? And did I really call you 'vulnerable' the other day? I think that it's pretty obvious why I did that." She opened her eyes and locked them with mine, smiling with pleasure, "Even the most ballbusting-fixated futa around the world has her limits."

I started to sweat. She knew about my fetish... which means she watched me on TV. It was pretty obvious that I was into ballbusting if you watched like 2, 3 episodes of me fighting in 'Fightinging Allstars', a global sports program.

"Alright well, miss confidence... We'll make it an endurance test then. How about that?" Yuki asked, stretching to the sides, her perfect, curvy body just a wonder to observe.

"And if we're at it already... should we make stakes for it? Like 'if you last till blank, I'll do blank' kind of stuff." She grinned with a spark in her eye.

I blinked and suddenly, there was a big, wide grin on my face. "Fuck yes!" I exclaimed immediately, "D- Do you have... something in mind?" I smiled, this evening was only getting better and better. So she did know about my fetish... and she still wanted to check me. I think we'll like each other very much after today...

"Drop your pants and pull your dick out of the way, I already know you love getting your balls battered sterile, you have several tells of it." Yuki suddenly said as she cocked her hips and checked her bandages before tightening some of them.

It hit me like a train as she suddenly became so direct. I already knew she knew, but I blushed heavily and gulped, my smile disappearing, "Uh... Y- Yeah..." I looked down, embarrassed. "S- So wait!!! Y- You're gonna actually... uh... really... 'ch-check my endurance', huh???" I blushed even harder, moving my hands hesitantly towards my pants. Suddenly, I became really nervous. But in a good way...

"I think you're confusing 'training' with 'fetish fuel'." Yuki said with a wide smirk, knowing she backed me into a corner, "So, you gonna drop them today or next year?" She added to make me blush like a little schoolgirl seeing her favorite, pretty futa teacher in the hallway.

I felt really exposed and vulnerable, my confidence was minced by the sexy grandmaster, but I wasn't one to give up so easily. My expression changed to a more determined and serious one. I dropped my pants and an absolute monstercock flopped out, reaching 14 inches already, and it wasn't even erect. On Yuki's eyes, two orange-sized, plump and saggy testicles started to dangle a little over an inch away from my cock as I spread my legs.

"Alright... So what? If you'll bust me and I'll stay on my legs... What do I get?" I said, hiding my shyness, crossing my hands and standing there, a bit blushed.

Yuki scratched her chin with a happy grin, her slightly glazed eyes looking down at my package. "Okay... Last 10 minutes, you get a quick handjob. Last 20 and I'll give you a more serious one. Last all the way to 40 and you'll get a small, quick blowjob. Last over an hour and I'll go until there's not even a single sperm cell wiggling around in you obscenely large balls." She sat down in front of me after pulling up a chair, "I have to admit though, you are very impressive. In all honesty im not sure if I'm gonna be able to fit it my mouth if you get past 40."

There was a bigger and bigger smile forming on my face as I heard what the rewards would be.

Yuki grabbed one of my balls and eyed it down, feeling it and giving it a quick squeeze before she stopped and looked me dead in the eyes and jammed her thumbnail into the front of my left gonad. The pain... was sort of unique, I hadn't had anyone do this to me yet, it felt as if Yuki stabbed my huge nut with a knife.

She began to scrape her nail down along the front side of my left orb, and since I had a bit of loose bearings on my balls the skin of my sack went down with her nail, only to be marked by its sharpness. Yuki was painfully scratching my testicle and stretching my scrotum while staring me down, her eyes up and locked with mine... she was so fucking cute and badass at the same time.

As she kept rolling her thumb down, my entire body shuddered and my eyes went wide a bit. So Yuki really wasn't fucking around...

As her nail was scratching my nut down, I hissed, but then just inhaled calmly and looked Yuki in the eyes.

"Wow... You have beautiful eyes..." I smiled a little cockily, but that just made Yuki more fierce as her grip around my large nut hardened. God her hands were so ideal on my nuts... She couldn't even grip one fully because of their size...

And her scratching was so precise and slow! It made me mad. With each second passing, I felt like breaking. With only just plunging her nail into my ball, she had me under control. After couple more seconds, I felt the stinging in my ball get real hard, "Gh... Gimme just a little breather... please..." I begged, starting to sweat a little. My legs stood strong though, and Yuki's expression showed she was surprised I wasn't on the floor already.

And from what she was doing, I knew Yuki was the kind of woman who likes to takes things slowly and passionately. And she knew what she was doing. Like she knew where to plunge her thumb and for how long to keep it there to quickly make me reach my limit.

She smirked and let go of my ball, waiting for me to catch my breath. As I was panting, I saw Yuki's eyes lower to my testicles as she was scaning for weak points. So what I thought about her was true... Just like me, she knew the structure of testicles perfectly (I went to medical school, don't ask.) and knew where are the most vulnerable spots on one's balls. And yes... even balls have weak points.

Yuki was an expert martial artist, a grandmaster at her temple... and a master of anatomy as I found out through this session...

Yuki's fist clenched before it rocketed up, giving me a sudden uppercut straight to the right ball, I felt the air vanish from my lungs, only to be hit with the feeling of both my balls crying out in agony and my lungs begging for air as Yuki quickly uppercutted the left one, making my hefty nuts jump up and clash with my pelvis.

Yuki had successfully exploited my nuts' weakest points. The punches themselves weren't that hard and didn't do any damage to my massive balls but still hurt like hell, because Yuki accurately aimed right at the bottom of my gonads, digging her knuckles into them,

"Also... you lose as soon as you fall to your knees, hun." Yuki said with a grin, ogling my dangling, swelling balls.

I was still standing, I mobilised my legs not to fall. I was determined to at least get that quick blowjob!

Yuki cracked her knuckles and grabbed each nut in her small hands, positioning her fingers around them to cover as much space as possible before she plunged her nails into my nutsack and made me squeak in surprise. She mercilessly yanked my jewels down and started to pull them, digging her fingers into them.

Tears formed in teh corners of my eyes as I felt Yuki being so rough with them. As I was reaching my limit again, she stopped and chuckled. Maybe she knew I was about to collapse?

All that boiling semen inside my balls begged for help and mercy, but I was tough as steel. "Goddess... You're experienced in this, aren't you? Guh... fuck no, I'm not going down to my knees..." I said, forcing a crooked smile while Yuki looked up and started to pleasantly scratch my hanging testes, pulling them down a bit, but it felt really pleasant, sort of like she was tickling them.

It felt so nice and tingly that I spread my knees, moaning softly. My eyes went up as Yuki had me in total dominance.

I was just melting on spot when Yuki was sensually rubbing all over my tortured gonads. I even neared Yuki, my tongue stuck out as I felt bliss with with my nuts.

"Although I'm not strong, I more than make up for it with... skill." A smug smile appeared on her face as she rolled her wrists and then started to caress my massive, aching eggs, her technique was God-like. She took care of all the "corners and edges", she even squeezed them a little, but it never really hurt, needless to say I was lost in the pleasure. Her hands lapped around my orbs, making them all better, before...

I was brutally snapped back to reality when Yuki tore her nails into my sack so hard it felt like I slammed my nuts on broken beer bottles and was currently rubbing them in.

I quickly realised why the pain was so severe. Yuki's nails dug around the testicle's weakest, most delicate points, which were just at the back of my orbs... the seminal cords! They connect to the balls at the back, and that's where Yuki tore her nails in! A jackpot. When pinched, they exploded with unbearable pain that made me yell in agony, clenching my eyes shut and grinding my teeth together.

"FUUUUCK!!! STOP! GAAAH!!!" I screeched.

"Aww... Does it hurt your big fucking cum tanks?!" Yuki smirked with an evil smile.

I wasn't expecting the sharp surprise attack on my vulnerable testes, which made me cry out in pain. At that one point, I instantly regreted opening myself so much to the grandmaster. My nuts were easily accesible for her, resulting in me whining in agony, my knees nearly giving up.

My hard-boiled eggs were certainly tough, but they were inexperienced compeltely in that kind of pain, inflicted by exploiting the most sensitive spot on the balls. My nuts were taut and red, dangling down in Yuki's hands, taking all the pain like two champs they were!

"Goddd...!!!! Ahhhh!!!! Fuck!! You're squashing my cum cords!!!!" I mewled, tears started to form in the corners of my eyes, but my dick, to Yuki's surprise, started to rise before her eyes!

"Oh... t- that's... something." Yuki had to cross her eyes a bit to see the monster pumping itself erect. I became super embarrassed, but I couldn't prevent my penis to rise from all the ball pain. I felt like my cum is going to burst on Yuki from all the abuse, splashing my sperm all over the sexy grandmaster.

Yuki was taking me through a rollercoaster of emotions as she let go and began caressing my balls, they were heavy and ached badly, the caressing helped ease the pain greatly. Yuki was even getting a bit intimate with it, she gave my dick the tiniest little peck on the tip, but just like last time, my perfect lil world came crashing down because of Yuki's hands.

Yuki had her hands on both sides of my hanging, big sack, so she quickly clenched her hands and slammed her fists from both sides, catching my testes from both sides. Her hands were smaller than my gargantuan jewels, so her knuckles crashed into the soft tissue and crunched my balls, making all the air escape from my lungs in a very short time...

My eyes widened in shock after my balls were compressed from both vulnerable sides. I looked Yuki straight in the eyes as the grandmaster grabbed at the very bottom of my testicles and squeezed with all her might. The gonads didn't withstand the pure pressure they were stressed with and it threw me straight over the line. With my cock standing at full mast, Yuki saw her mistake only after all that excessive babybatter spurted out from my rod straight at Yuki's chest and face.

My sticky, thick and sweltering semen coated Yuki's ample breasts, slowly flowing down on them, looking absolutely perfect as it sparkled in the dim light. I was left with one leg in heaven and the other in hell at the same time as my face changed into an absolute ahegao and I looked up at the ceiling with my tongue out. I was absolutely stunned, my orgasming gonads contracting up to my pelvis, trying to dispose all that seed into my cock and trying to escape Yuki's hard grasp.

Yuki was speechless, she kind just froze and looked at herself, her eyes sparked for a mere second, and although I was cumming, I knew that look perfectly. The eyes of a girl that can't deny her love for excessive amounts of cum. She even liked some off her lips!

But... Yuki's expression changed. She seemed to be overfilled with hatred as she got up and looked at me with absolute undying fury in her eyes. It was over for my jewels...

"Ah~! Y- Yuki, I- " I gasped, my entire body frozen in rapture and my eyes going up to the back of my skull, "that wasn't-" I kept on, but just moaned in great pleasure, my fat, orange-sized testicles churning with cum and contracting up to my pelvis to distribute all the cum inside to spray at Yuki's Goddess-level body.

"s- sorry...!" I managed to squeak out, all my muscles taut and my mind focused on releasing so much baby batter from my long cock, which felt great! My legs were not able to move, so they stayed spread, leaving my orgasming nuts completely defenseless.

Yuki's nostril twitched as she angrily grabbed both my shouders and looked me square in the eyes,

"Game over, painslut." She knew I was in the middle of an orgasm, but couldn't care in the least. Yuki rammed her knee into my hard-working gonads, making a dent in them, re-shaping them to fit her knee shape. She repeated the debilitating strike four times, each quicker and messier. I was in a sex-daze the moment Yuki grabbed me, and when she started to knee me mercilessly, my ejaculation was only made more powerful, with each knee, a fat glob of cum sprayed out onto Yuki's belly and hips. After assaulting my working testicles, she pushed me down and rammed her toes directly into my fat, swollen orbs.

"I don't think you'll have kids after that... Those two saggy bitches won't produce sperm anymore! I'm gonna make sure of that!!!"

Yuki didn't care about simple tactics at this point, she just wanted something to kill, and my nuts were perfect. She lifted her leg and curb-stomped my ejaculating testicles against the wooden tiles, repeating the kick and crushing my jewels with her toes, each hit was more painful then the last, and Yuki only stopped when she was to tired. Yuki sat down and let out a tired sigh.

"ghhhhhh--" a groan of agony escaped my mouth. I was all red from pain and the fact that I couldn't inhale due to the relentless assault on my sensitive gonads didn't help. After I felt Yuki's pretty toes mash my gonads against the edge of a wooden frame surrounding the mats, I squirmed in pain. I couldn't even defend myself because all that busting made me lose control in my legs...