A/N: Slight smut alert! Ahaa, okay so, I'm familiar with turtles and how they go about mating. But you know, I figured, they're mutated. Maybe they're anatomy changed also, so I'm going with a slight anthromorphic take on Leonardo's uh...parts. Eheheh...Read and Review!

NOTICE: THIS STORY HAS OC CHARACTERS. IF YOU'D LIKE TO SEE WHAT ANY OF THEM LOOK LIKE, PLEASE CHECK THE LINKS ON MY PROFILE FOR YOUR VISUAL AID.

"You're not a monster, you're beautiful. Please…please come home," Shiho almost said no, but he pleaded with her and triggered her sensitive core more than she wanted. Her chest heaved with a sigh that exhaled through her nose. Leo glanced down at her neck, he wasn't sure why she chose to have the outline of a star tattooed there, but he kind of liked it.

"Alright, alright. Come on then, let's get out of here before they catch you back here," The fox was quick to rid herself of the lace lingerie, exchanging the tease with her normal shorts and v-neck t-shirt and a pair of Converse. Leo couldn't keep his eyes off her as she moved around and gathered her belongings, he was afraid that she'd vanish if he dared to look away. With a black backpack slung over her shoulder, Shiho made her motions to leave before her reached out to stop her.

"What?"

"…Take the lingerie," Naughty turtle.

Shiho received quite the harsh scolding from Splinter when the turtles had finally brought her back; he wasn't her master or father but she still respected him all the same. The rat told her exactly what she needed to hear before giving her a swift smack on the head with his staff. Shiho took the punishment in stride and held her tail between her legs for the next few days whenever he walked by, but he was still satisfied that she was safe and their home was slowly falling back into its normal atmosphere.

Donnie begged for a day with the fox to scratch his itch for information. Anything new and potentially undiscovered in his mind was enough to have him foaming at the mouth to learn everything he possibly could. His desire to learn so much almost disturbed the hybrid but she couldn't hide from the genius for very long. He knew every nook and cranny of the layer and would always wind up finding her somehow.

Today was no different as the fox curled up with her tail tucked tightly around her body inside one of the ventilation shafts. Through the filter screen, she could see Donnie wandering around the living space and looking high and low, she had him this time. Snickering, a puff of dust blew in her face and made her bust out in a sneeze, blowing her cover.

"Ah-hah! There you are my little minx. Come on! You promised me!" Donnie hunkered up onto a stool and pulled off the grill and laughed. She was covered in cobwebs and dust looking very disgruntled with her tall ears flat out in annoyance. In the dark her eyes glowed, he clearly saw the violet hues roll about in her skull.

"Alright, Donatello, if you promise to leave me alone once you've gotten the answers you're so eager to have," Crawling out of the vent, Shiho sneezed again and shook off like a wet animal to rid herself of the dust and webs.

"Just humor him, Shiho. He goes away eventually,"

"Thanks for the support, Leo. I can feel your love radiating like the sun- Ow! Ow, ow, ow OKAY!" Shiho had latched her fingers onto the top of Donatello's shell and dragged him up the few steps to his desk and plopped onto the wooden surface with her legs crossed. She sure was moody today.

"Alright, what first, Einstein?"

"Okay, for starters, I want to test your bite force. In your fits of madness you can crush bone like twigs between your teeth. The experiment will show me just how hard you can really bite with resistance when the Madness isn't set in," The turtle retrieved a narrow, steel bar with a wire attached from it to one of his many computers. "Here, when I say so, bite down on this as hard as you can. The sensors will register your bite force in the computer,"

"Uhh…you sure? I don't wanna break it, looks expensive," Inquisitively, the fox examined the strange looking tool closely as Donnie waved his has absentmindedly.

"Don't worry about it, I made it. If you break it, awesome. Okay ready?" Shrugging, Shiho placed the steel rod between her jaws and waited. "And…now!"

With all of the strength in her jaws and skull, Shiho chomped down as hard as she could until her thick molars sunk into the metal and her canines crossed together. The steel creaked and whined under the pressure of her strong teeth making Leonardo flinch. Donnie rubbed his hands together vigorously watching the data appear on the screen instantly.

"Amazing! Your bite force almost rivals that of a freshwater crocodile!" Arching one of her brows curiously, she removed the now crumpled steel rod and plucked it from her teeth. "They have the strongest bite force ever measured on the planet, at over 5000 lbs. per square inch,"

"And what's mine?" Clicking his mouse and typing a few keys, Donnie's eyes boggled about in his head.

"4325 lbs!" His outburst caught Leonardo's attention from his state of meditation alongside Splinter. Quietly, he excused himself to join his brother and look at the collected data so far.

"Wow, I can only imagine what was in the stuff that mutated your DNA. Donnie, can you test for that?" Leo asked with his hand leaning on the desk beside Shiho who now dangled her legs and mindlessly kicked them back and forth. They met gazes for a moment, the ninja winked before she had the chance to look away and she winked right back with a click of her tongue.

"I can try, but the acidic levels of her blood could pose a problem," Slightly embarrassed, the fox flattened her ears against her head and turned away with a blush on her face. "Relax, I can give it a try though. That is if you don't mind needles,"

The idea of a needle wasn't the scary part to Shiho; it's what it was injecting. But if he was only drawing blood, then maybe she'd be alright without going through the motions of a panic attack. "Yeah, I don't see why not. I'm a horrible patient though; needles still make me nervous,"

With a nod, Donnie wheeled across his space to a cabinet and opened a drawer with the word "Sterile" printed on a label and withdrew a needle, syringe, and a spare capsule. The sight of the sharp end made the fox wince and latch onto Leonardo's bicep. After years of being the object of experiments, the brothers couldn't blame Shiho for her timid behavior. Though, her sudden trembling did anger Leo in the farthest part of his mind, angered by the acts of cruelty against her.

"It's alright, If you hold onto Leo and look the other way, it'll be over in a second. Trust me, it's not my job to make you uncomfortable, we don't have to take any," Curling her lip and chewing nervously, Shiho bravely clung to Leo's muscled arm and buried her face against it with her right held out.

"No, no. It's alright, just hurry," Leonardo made sure to hold still as his brother cleaned and sanitized the crook of her arm with alcohol and a cotton ball after tying an elastic band around to expose her veins. Giving the taut skin a flick or two, he opened his needle and pressed it to her largest vein.

"Okay, ready…one…two…three," The vixen winced and dug her nails into the firm muscle of Leo's arm as Donnie stuck her arm as quickly as he could and started drawing the blood from her veins. "Alright, almost done. The blood is warmer than the average human, I can feel it through the glass. Okay, finished,"

Looking down, her arm was already being taped up with a piece of small gauze at the injection sight. Donatello moved quickly and put the vials into a chiller to preserve it for later observation. Maybe by keeping it cold, he'd slow down the acid liquid from eating through the vials. Swiftly, Shiho's cheek was pressed against by Leo's lips before Donnie had the chance to turn around. Like he hoped, it made her smile.

"What's next Donnie?" She asked, leaning completely against her favorite ninja.

"Your eyes. I'm curious about the chemical reaction that seems to go on in the dark, like a glow stick. I'm not going to do anything invasive, just take a look with an optic instrument. Shine a light into your irises and record it into the computer,"

"Sounds fine to me,"

The rest of the day was like that. Donnie asking questions and doing all of the experiments he could. He saved the filtering of her blood for last, trying to keep it as cool as possible so he wouldn't burn any of his equipment with it. He tested her hearing, sense of smell, eyesight in the dark, took x-rays of her teeth; everything. By the time he was finished, she was exhausted, but he was more than excited to go over his data and results. While he stayed hidden away behind his computers and notes, Shiho slipped up to Leo's room to crawl under the covers in bed and curled up into a ball, he followed right behind her.

"Hm, tired?" Leo entered and pressed the square button on the wall to close the door behind him. His answer from his vixen was a muffled groan and some words that he couldn't understand. What a baby she was sometimes. "You did great today; Donnie is like a kid in a candy store with all of your data."

"So many questions. I thought I was going to scream," Donnie had a bad habit of becoming overzealous when conducting experiments and playing with his gadgets. He'd even put her on a treadmill to clock how fast she was able to run when given the distance. But, Shiho, like everyone else, adored Donatello to pieces and loved him with all her heart. The ninja didn't have a single rude bone in his body, quite unlike his brother Raphael who perplexed Shiho to no end sometimes.

"So I take it you're not up for a run to the rooftop then huh?" Lazily, her tail drooped over the bed and didn't even have the energy to sway. The mutant crossed his arms and chuckled to himself, Shiho was hysterical when she was this tired and he just had to play with her.

"Maybe if you carry me," She mumbled. Reaching down silently, the ninja grasped her tail between his fingers and gave the appendage a rough tug that scooted her almost out of bed. "LEO! That's attached you know!?"

"Come oooon! One run isn't gonna kill you, Shiho. Pretty please?" His answer was a dirty glare as she swiped her tail out of his grip and cuddled it like a doll. The fur was silky and smooth between his fingers, he couldn't get enough of petting it like some child.

"Don't give me that, Leonardo. Don't think because you have those amazing muscled arms and intoxicating allure that you can get me to go outside when your brother has worked me like a lab rat,"

"Amazing muscles, huh?" Ducking her head under a pillow, Shiho snorted.

"Shut-up. Hey!" Leo pulled the feathered pillow off her head and out of her grip and grinned. She's seen that smug look before; she'd fed his ego enough times to know when he wanted to hear more.

"I knew you were checking me out. You wanna feel my muscles don't ya?" Teasingly, Leo jumped on the bed between her legs and made her squeal in surprise.

"Quit it, Leo, or I'll smack that pretty face of yours," Just what exactly did he think he was doing? Crawling on her like that and teasing her like some high school jock. Yanking her by the thighs downward, Shiho slammed against his shell with a yelp. "Dammit, Leonardo!"

"I'm not gonna leave you alone until you say you like my muscles and you want to touch them. Now that I think about it, I'm curious as to what other parts of me you want to look at and touch," Now he was being mean, he could tell he was getting deep under her skin by the rise of fur on her pert ears and the crimson stain on her cheeks. Gliding his hands up the backs of her bare thighs, the turtle didn't let up with taunting her. "Come on, say it,"

"Butthead, get off," With her palms, she pushed on the shell of his chest but didn't do much damage. The ninja was too swift and pinned her hands above her head by the wrists. The outer rim of his top shell rubbed grooves into her thighs as his little game escalated.

"I wanna hear it. Or I'll just keep going until you cave, but judging by your stubborn silence, you want me to keep going,"

"What?! Leo!" Shiho grunted and gasped trying to break free, but she knew he wasn't about to let her go. Those muscles in his gorgeous arms had her stuck. "What kinda boyfriend are you, dammit you're so mean! Rotten turtle!"

"Ohh I'm you're boyfriend now?" With a loud growl, Shiho tossed her head back against the mattress and counted to ten in her head before she lost control and smacked him right in the kisser. He was teasing her like a teenager and she didn't like it. She didn't hate it, but she didn't like it. Leo knew just how to ruffle her feathers, well…fur. But this was a whole new approach that he'd never ventured before.

"Well, I think we've distinguished the line between best friends and fuck buddies. Granted, we've never fucked." Red-brown eyes widened at her foul language, surprised when he found himself turned on by it. With a chuckle, he leaned down to bring his cool lips just centimeters apart from those glossy buds that made him quiver in the shell. The sudden invasion of space brought a hitch and tremble to her breathing, making it unsteady.

"You know, that ooze didn't just mutate me into a walking and talking turtle. Not everything about me is 100% turtle, in fact," Not entirely sure what that could mean, Shiho's rigid muscles relaxed and her balled up fists opened under his tight grasp. She had a pretty good idea what he was hinting at but was too embarrassed to ask. Now, Shiho was very aware of the position she was in; vulnerable and pinned against the bed with a very powerful ninja between her thighs. It almost didn't feel real.

"R-..really now?" She coughed nervously. "What exactly do you mean about that?"

"Want me to show you?" Leo was teasing her in a brand new way, talking in a low and steady voice that had the fur on her ears standing on end and every inch of her skin tingling with goose bumps. He had the reigns on this ride and was going to make damn sure he was controlling everything and he started by licking her bottom lip slowly. "I know you want me to,"

This Leonardo was thousands of times different than the leader of the ninja turtles she'd become so familiar with. He took her game of seduction and turned it around and made her the victim, weak and needy. Leo had to admit he was digging the fact that she didn't give a single damn about the difference in their species, she was able to see him way beyond something so superficial. Releasing her hands and grabbing her hips in a swift motion, the turtle executed his ninja fluidity and switched up the position until she was placed firmly in his lap.

"What are you saying?" She wasn't able to bring her voice higher than a whisper as her fingers twirled in the fabric of his headband and loosening the knot. Dragging both of his large, three-fingered hands through the smooth tresses of her auburn mane Leo brought her face closer to his. So close in fact they could taste each other's breath.

"You know exactly what I'm saying. You want me," Leo was so smug when he knew he was right. A beast like Shiho was putty in his hands. "And I want you. I think it's time,"

"I've never-"

"I know, neither have I. But Shiho," Her gaze had dropped and he had to bring it back up. In her eyes he could see the acceptance and submission, that she was willing to try."I'm not going to lie, this is going to hurt but not for long. Turtles are uh…" The seducing ninja was at a loss for words in describing his anatomy. He was mutated, everything about him wasn't like an ordinary turtle.

"Endowed?" She giggled to ease her nerves, Leo loved her humor and nodded.

"Yeah, very…endowed," Shiho had to admit, losing her virginity to a mutant ninja turtle was outlandish and crazy to just about all people. But she was obviously not a normal girl herself, and knowing that it was Leo made her feel safe. Still, she was terrified. Hesitantly, the smitten vixen leaned her head down with her ears folded flat to kiss that handsome ninja. She hoped he couldn't hear the pounding of her heart against her chest, because it thundered in her ears.

Heavy, wet kissing led to petting and ragged, gasping breaths between the two of them. Leo worked her onto her back once again and settled between her legs while she started to untie the headband. Both were completely new to this game and their inexperience showed as they fumbled about with his belts and her clothes. But they managed until he had her completely stripped down. Leo groaned against her neck from the surging pain of his growing arousal, making her jump and force him back a ways to look at his face.

"Leo?"

"I'm alright, just ah…struggling," Confused, Shiho stared blankly at him for a few moments before he indicated downward with his eyes. Following his gaze, the fox quickly grew red in the cheeks with eyes wide with fear. Despite being a turtle, Leo's painful arousal looked remarkably human…only…green. That wasn't the scary part, Shiho's eyes nearly crossed when she understood now just how 'gifted' he really was. At full length, the ninja's sex looked almost 11 inches long coming through a slit in the soft part of his lower shell.

"Oh my God, Leo I don't think-"

"Slowly, Shiho, not going to force it into you and hope for the best," All of the teasing and torment he'd put her through earlier had the fox moist and aroused herself, she hoped it was enough to let him pass without too much pain. Instantly, Leo began to shake as he hovered above his lovely minx; she looked absolutely terrified. "Wait, I can't when you look at me like that, let's hold off on this,"

"Leo no! I'm okay, I promise," He wasn't buying it and his expression told her so. Rocking her hips upward in a grind, the ninja let out an abysmal groan from the pit of his chest. "I want it, Leo"

Sighing through his nose, the turtle came back down and planted a heavy, desperate kiss that was laced with want. Reaching down between her legs, Leo started to press into her core which made her grip sharply into his biceps and squeeze her eyes shut. She'd never been intimate with anyone before, despite the few weeks she spent dancing, the new experience was terrifying but at the same time she never felt more ready. Slowly, very slowly he shifted into Shiho's trembling body, filling her entirely and attempted to kiss away the pain while trying to hold his own. True to virgin nature, Shiho was tighter than a snare and hugged his length with her heat and smoothness. He prodded at her unbroken membrane and gave her a moment to gather herself.

"Ready?" When she nodded, Leo forced himself through the fox's hymen with a grunt and thrust of his hips and muffled her scream with a kiss. Shiho squirmed from the burning and stinging pain of being broken, even drops of moisture formed in the corners of her eyes. Something Leo did not want to happen. "Oh Shiho…mm I'm sorry,"

Coming to grips with the pain and the change, Shiho put control into her mind and breathing to release Leo's arms and embrace him around the neck. For as long as he could remember, Leo had always remained in the shadows and called a freak or a monster when he dared to step out. April and Casey aside, Shiho was really the only girl to see beyond the shell and love him like a man. Now, here they were, turtle and fox doing something very human but doing it together. Leo couldn't put a lid on his overwhelming happiness even though he could see the look of pain and discomfort on her face; he knew it would fade. "You alright, Leo?"

His attention was pulled out of his thoughts by the fluttering voice of his vixen, hushed and oddly erotic. The pain was pulling back, Shiho was loosening up enough for him to draw back and push back in with slow, steady thrusts. Gradually, her beautiful face relaxed and the tension all but disappeared. In response, his parted lips pushed roughly into hers for a deep, satisfying kissed that lured out a moan from her throat into his mouth. It was starting to feel good...real good. Neither of them had ever felt something so raw and amazing. Grunting softly with each of his thrusts, Leo captured one of her small hands and grasped it tightly and held it on the pillow above her head. His heart fluttered wildly in his chest at the sight of her face, flushed with wide open violet eyes that looked nowhere else but right back into his.

"Leo!" Shiho gasped when he suddenly picked up his pace and rocked her hips wildly.

"Shh, everyone is downstairs..." Over and over...again and again, Leo managed to slide with ease into his fox. The fresh, warm walls of her moist core stroked his rigid arousal until it twitched, he'd never felt anything so soft and wet...so hot. By the rocking of her hips and the way her teeth tore into her lip, the ninja guessed she was enjoying herself, his speculation was put to rest when her eyes rolled shut and her lips fell agape in a wide smile. He hadn't noticed how heavy or loud his breathing had become, like he'd been sprinting, Shiho riled him up more than he'd ever imagined she would. "You like it...mm..like that?"

"Leo yes...I l-..ahh like it...D-don't stop," Like he would do something so cruel. Rougher than he ever had, Leo crushed his lips together with the fox and invaded her delicious mouth with his cold, slithering tongue. Shiho's ears started to buzz from the intense heat building up in her body, she was close to her first climax and teemed with excitement that Leo was the one who would bring her to it. Leo couldn't stop;l her body was too inviting, her voice too intoxicating...Leo really felt himself falling more in love.

The next thing to happen nearly scared the pair out of their skin and shell. A pounding on his bedroom door and obnoxious yelling. "Hey Leo! Shiho! Get your butts out here, it's movie night!" Shiho was going to yank that Michelangelo out of his shell when she got her hands on him. A long, heavy sigh of disappointed breathed out of Leo's lungs as their moment had been absolutely ruined. At least the hard part was out of the way.

"Dammit…you know if we don't get down there, he's going to come back," New tears replaced the ones of pain as they slid down the sides of her face, not out of disappointment, but anger. She'd gotten so close, they both had. "Hey, don't do that. We'll try again, I promise…"

"I know, I just feel like such a damn child getting her favorite toy taken away- AH!" Not even thinking, Leo quickly withdrew himself from her core and resulted in a shrill scream. Quickly, he covered her mouth with his hand before she went on anymore. He felt like an asshole.

"Shiho, I'm sorry, I'm sorry! Oh jeez…" Taking his hand from her mouth, he reached over to his nightstand and pulled out one of many clean washcloths and handed it to her. "You're bleeding,"

Finally after 20 minutes of awkward re-dressing, Shiho and Leo joined the family in the hopes that they hadn't heard her scream or caught on to what they were doing. They were all gathered around the multiple TV screens either sitting on the couch or on the floor. Leo took his place in one of the recliners and pulled her into his lap, she'd be too sore to sit anywhere else.

"Leo, it was your turn to choose the movie. But since you were up there bumpin' uglies with Miss Hottie there, Mikey got to choose," Raph snorted as Mikey eagerly popped in his DVD. Both knew that he was kidding, Raphael had no idea what they were doing, but that didn't stop them from blushing. "Now, we gotta watch Godzilla for the millionth time,"

The family watched the movie all the while suffering through Michelangelo reciting every single line. Shiho would rather lose her virginity again than listen to him giggle nonstop.

A/N: Okay, that was interesting for me to come up with. I've never done turtle smut before e-e. I hope it wasn't too...stupid I guess. I dunno. Anyway, read on!