Before you read, it is important to note that THIS STORY IS NOT MINE. You can tell because it is competently written and doesn't trigger brain aneurisms as my usual works of "high literature" do. No, this is a genuine, fluffy, vanilla story that was written by a very talented anon on /a/ who did not want to post this fic himself and thus gave me permission to repost his story here instead. Please enjoy his work. Careful now, you may want to keep some insulin nearby for this one...

Senpai jogged down the quiet sidewalk, taking note of the colorful leaves beginning to cover the streets as he turned a corner. He could feel a cramp starting to develop in his stomach, but the peacefulness of his surroundings made him want to keep going. He'd been trying so hard lately, and knew he must be making much better time than last week's run, although he hadn't checked. Nagatoro had the stopwatch.

The thought brought him out of his reflective state of mind, and his stomach tightened. He slowed to a brisk walk.

"Oh," he thought, "I almost forgot for a moment we were running together."

He had never gotten this far ahead of her. She had missed a walk signal and they had been separated some blocks back. She had waved him to go ahead, with stopwatch in hand, teasing him to make a better time than his usual pathetic performance.

"I'll catch up in no time, so don't you dare slow down, Senpai!" She had yelled behind him. He wanted to wait for her, but even more he wanted to beat her time, for once. The thought of beating her, even under dubious circumstances, had lit a fire under him for several blocks, but the sedate atmosphere soon took him in. He hadn't been running often without Naga. He never did very well when he tried. Today felt different though. Perhaps his efforts had been paying off.

Now, however, he felt like an idiot for forgetting about Naga. How far back was she? They usually ran to the park two blocks away, but surely she couldn't have gotten ahead of him , could she? He wasn't so sure. She was always ahead of him. All at once, he felt the need to beat her well up inside him again. It was only two blocks, after all. He breathed deeply as he started jogging again, and did his best to ignore the cramp, although somehow it seemed to have diminished on its own.

Only one block left now, and no sign of Nagatoro ahead at the park! "Oh wait," he realized, "how will I even know what my time is if she's not with me? Come to think of it, is she really OK? She's never been this far behind me before..." He shouldn't have worried. As he thought it, he heard someone bound around the corner he'd turned less than a minute ago. He looked back to see Nagatoro, legs and arms pumping rhythmically, sweat dripping from her chin, and a deadly determined look on her face. She saw him, and seemed to get even faster, as she smiled fiercely. He'd seen her competitive instinct come out before, but never this extreme!

He turned his head back towards the park and tried to accelerate, but he knew he could never match her sprint. Still, the park was so close! Excitement overtook him; he could beat her! As his stride lengthened, he could hear not only her ever-louder footfalls, but heavy breathing. He knew she was closing on him. The primal feeling of being hunted filled his body with even more energy and he fell into a sprint as he came within 30 meters of the park. 20 meters. 10 meters. He couldn't hear her anymore, he was totally focused on keeping his legs underneath him. He hadn't sprinted all-out like this since he was a child. Just a couple meters from the end of the sidewalk that they used as their finish line, his body jerked involuntarily to the left, as something entered his peripheral vision just to his right. She was trying to force past him on the slim sidewalk. Just as they both reached the finish line, their frantically pumping arms smacked into each other, and their rhythms were catastrophically disrupted. Both toppled over into the grass together, rolling easily two meters before finally stopping.

It took a long moment for him to come back to his senses. He was rattled, but didn't feel any serious pain. His brain struggled to catch up to what had just happened. As they fell, their arms had stayed intertwined. He had fallen on top of her, but instinctively held her close as they rolled. He had come to rest flat on his back, with her head resting on his chest. As his mind slowly caught up to the situation, he started to feel flustered. Her head seemed so heavy. His chest raised and lowered, over and over, trying to catch his breath, still winded from the race. He could feel hers doing the same against his stomach.

"Are you OK, Nagatoro? Did you get hurt at all?" he said weakly, in between breaths.
"I think I'm fine, Senpai... Can you let go of me now?"

He looked down to see his arms tightly wrapped around her. His left arm was wrapped tightly around her waist, pressing her hips into his. His other arm was holding down her neck, his fingers pushing the back of her head into his chest. No wonder it felt so heavy. He took a deep breath and tried to relax his muscles as his cheeks got unbearably hot. Thank god his face was already flush from exertion. The last thing he needed was for this situation to be even more embarrassing.

He lifted his arms and let them fall to his sides, leaving him totally splayed out on the grass. She didn't move, except the heaving of her chest. He could feel her breath, strangely cool on his now sweat-drenched t-shirt. She felt so light now. As he looked down at her, he could only see the top of her head and her shoulders. His arms suddenly felt cold. They'd been drenched in their combined sweat as he'd clenched her to him, and now the chill fall breeze was caressing them. All of a sudden he wanted desperately to warm them against her body again. He tried to shut out those thoughts. He couldn't afford them with her resting against his hips like this.

He felt immobilized by exhaustion, and knew she must feel the same. Still, he had to get her off of him soon. Someone could see them like this, and that wouldn't be fair to her. Those thoughts seemed to float through his head automatically, but his body was no more ready to act. Her dark hair was beautiful, even matted with sweat, and the loose ponytail it had been held in was fanned across his chest in a way that made him long for his sketchbook. He realized he'd been staring at it idly for some time. "Gross," he though to himself, "I'm being gross again." He could almost hear her teasing protestations of "Kimo, kimo" echoing in his head. He tried to look away.

With an effort of will, he shifted his focus to the leaves overhead once again. He had never really appreciated them as much as he did today. "...beautiful" he said breathily as he exhaled, without having intended to voice his thoughts. Filled with an odd contentment, he almost wished he could fall asleep here, like this.

"What was that, Senpai?" Nagatoro asked quietly. It was strange to hear that tone of voice from her. She was always teasing him, cajoling him, berating him, arguing with him. Her arms slowly moved down either side of him. He tried not to look at her as she pushed against the ground to lift herself off of him. He cursed himself for breaking the spell that had held them there.

"Nothing", he said, hoping she hadn't truly heard. Things were awkward enough already. She slowly got to her feet, and turned away from him as she fixed her ponytail. He couldn't help but admire her for a moment. Her sports bra and spats clung tightly to her, and her back looked surprisingly dry and smooth compared to how sweaty she'd felt pressed against him. She seemed impossibly distant now, by comparison. After a few seconds he finally forced his legs to move, and found his footing while forcing down the frustration that he'd felt so many times before. She was still turned away, but he faced her sheepishly to apologize.

"I'm sorry for... you know, grabbing you..." he said haltingly.

"That's ok, it was my fault for trying to get past you like that." She finished fixing her hair, and turned towards him, revealing her usual wolfish smile on her nonetheless flush face. "I'll give you a pass for being gross this time since you worked so hard, Senpai! I've never seen you run that fast."

"Well... I wanted to beat you for once..." he said.

"Aww, too bad Senpai, you still lost!" she teased in an almost musical voice.

Feeling a rush of annoyance with her, he protested, "What?! That was a tie at worst!"

"Idiot Senpai! I had a huge handicap and I still caught up with you! Obviously I won!" she argued haughtily.

"Ugh, fine, that's fair I guess... Someday soon I'll beat you fair and square though."

Hearing this, her smile widened even more, her canines sharply visible, and she drew a step closer to him. He felt a twinge of the prey's fear of the hunter return.

"If you want to beat me so bad, let's go back to my house and play some fighting games again! You did well today, consider it a reward!" She beamed.

"What? Right now?" he asked.

She replied enthusiastically, "Sure! My house should be empty today anyway, you can clean up there."

The idea was strangely tempting, but he also still felt an odd frustration that would not subside. She must have seen it on his face. Her expression softened. She drew another step closer to him and lowered her head. She was close enough to feel the heat of her body, and hear her still-labored breath. Her eyes hid behind her bangs. Softly, she said, "The truth is, Senpai, I think I hurt my leg a little when we fell. You'll make sure I get home all right... won't you?"

Suddenly she was looking up at him, her eyes wide and questioning. He looked away, blushing.

"F-fine... Of course I'll walk you home. Are you sure it's OK?"

Her expression proclaimed absolute victory.

"Of course, Senpai! But you'd better give me a piggyback ride the whole way!"

"What?! I'm exhausted!" he protested.

"Take responsibility, Senpai! It's your fault after all!" she playfully returned.

Senpai felt utterly defeated. He turned around and lowered his back. She immediately hopped on with surprising force, her legs resting on his hips as if they'd done this a hundred times. They had done it a few times, he realized... And yet this time she felt unusually light. Her chin came to rest on his shoulder, and he could feel her cheek on his neck. He was glad she couldn't see his face. Somehow he was completely under her thumb again, just when he thought he might gain some small advantage. As he began carrying her back to her house, however, her body flat against his back, he realized that the frustration he'd been feeling had evaporated.

Senpai sat naked in the bath. Nagatoro had already bathed and emerged looking immensely self-satisfied and relaxed, with a floral scent wafting off of her that he'd noticed faintly a hundred times. He suddenly felt disgustingly filthy. She lazily rummaged around in a closet and handed him a towel with some of her brother's clean clothes. She was wearing tight shorts with a cute bow tied in the string at the front, and a loose t-shirt.

"Get cleaned up, Senpai! Your clothes are drenched! You don't want to catch a cold again!" She gave him a slight coy glance as she entered her room and closed the door.

Now he was finally alone, and able to truly relax for a moment. The heat of the bath felt incredible after the intensity of their run, and was a perfect contrast to the chill of the fall air on his sweat-drenched clothes as they walked home. He had spent the last twenty minutes cooling off, drinking water, and trying very hard not to consider what Nagatoro was doing in the bath. He stared at the panoply of body washes, soaps, and shampoos on the countertop. He picked them up, one by one and smelled them, hoping to avoid using anything that Nagatoro or her sister used. He flipped up the lid of a green bottle and squeezed it lightly. The intensity of the aroma overwhelmed him. This was Nagatoro's scent. Hayase's scent. Images flowed into his mind from times when she'd been close to him. "So many times," he realized, "have we been so close, but I never have the guts to do anything. It's always an accident, like today. My sketches are the only way I can show her how beautiful I think she is... I'm worthless."

He flipped the lid closed, selected a more neutral soap and despondently got to work. He couldn't help but think about her. Her teasing had taken on a subtly different feeling lately. He knew that she cared for him, but some days he felt like her pet. There were times when they weren't together that he even longed to feel like her pet. It made him feel even more pathetic. He wanted so badly to show her some stronger side of himself, someone worth caring for, but he wasn't sure it existed. He finished bathing and did his best to shove those thoughts aside. At least he could have fun with Nagatoro today.

After the first few games, Nagatoro was up to her usual tricks. Every time he started winning, she'd poke him, insult him, try to block his view, anything to keep him from beating her. They had started off seated a couple feet away from each other on the floor, but Nagatoro's constant distractions left her tantalizingly close. He was certain that she knew what she was doing to him. As he fired off a combo and started winning again, she let her loose t-shirt fall down her shoulder. He could not help but imagine the warmth of that smooth skin. He had held her for what felt like minutes earlier that day, but couldn't call to mind the sensation of it. It had happened too fast. He felt robbed.

He heard the TV proclaim "KO!", and then he was back to his senses, embarrassed that her scheme had worked so completely.

"Come on, Nagatoro, play fair." he scolded her.

"What, Senpai? I didn't do anything! You must be distracted by something, pervert Senpai!" She said through a laughing grin as she adjusted her t-shirt back into place. He didn't think she was wearing a bra.

"Fine, let's go again then!", he insisted.

This time he would keep his focus! This time he would prove that he could beat her regardless of how much she teased him. As the game started he kept his eyes completely glued to the screen and to the fighting stick on the table in front of him. He heard her playful voice, but tuned it out. In moments, he had won the first round.

"Hah!", he proclaimed joyously. Then he glanced over at her, and noticed that the loose collar of her shirt was pulled tightly forward, low enough to see cleavage. She definitely was not wearing anything underneath it.

Her expression betrayed enormous frustration. Was there also a hint of disappointment there? "What are you celebrating for! It's best out of three! Keep going!"

"Fine, fine." he said, and tried to regain his focus. He tore his eyes away from Nagatoro and back to the game. As the next round started, he looked for an opening. Suddenly, his view was blocked by Nagatoro's back. She slipped between his arms and planted herself between his legs, her controller in hand.

Senpai's mind went blank. His hands froze. Her scent was suddenly even more overwhelming than it had been in the bath. How could that be? How could she smell so much better than the body wash did? He wanted to find out. He rested his chin on her shoulder. She'd been doing just the same to him earlier, it should be fine, right? Her gorgeous hair rested against his chest again. He looked down and realized that her t-shirt had caught on his arms as she sat down. Her midriff was exposed, and his arms were touching her skin. He desperately needed more. This time he would remember it.

His arms slowly wrapped around her waist underneath her shirt without being told. As his hands started to find wonderful little curves to grip, he gained some semblance of rationality back, and was about to say something. Before he could, he noticed that Nagatoro's shirt was getting higher and higher up her torso, revealing more and more of that skin he wanted so badly to caress. She was taking it off.

"Move your head, Senpai", she asked, almost inaudibly.

He lifted his chin from her shoulder as she pulled the t-shirt over her head, her hair cascading over her shoulder blades as he pressed himself into her back again. He wrapped his arms around her waist even more tightly, unable to resist drawing every inch of her he could against his body. Her butt squirmed against his waist slightly, and he realized that he was fully erect, and forcefully holding it against her. He felt slightly ashamed, and moved his waist back to give her some space. She immediately pressed her hips into him, squeezing his erection tightly between them, and sending sensations through his body more intense than he knew was possible. He didn't know what, but he had to do more, to have more, right now. He kissed her shoulder. He kissed her at the base of her neck. he kissed her all the way up her neck, and across her cheek, until all that was left was to kiss her lips.

"Ha-hayase... are you sure this is..." he said weakly.

"Shut up you idiot!" she said hurriedly, expectantly.

He felt his hands slowly moving up from her waist. As his left found her breast, his right came up to her head, and gently moved her chin to face him. Her expression was nervous, full of uncertainty and embarrassment. He didn't care anymore. He wouldn't feel that way. She would know how he felt, and he would never feel that frustration again, one way or the other. He drew his lips closer, and slowly, for what seemed like minutes, kissed her. Neither of them knew what to do, but it was easier than he'd expected. After bumping their teeth and noses once or twice, they settled into an intense, building rhythm. Her hips were still pressed against his erection. They were moving in time with the rest of her. His mind was completely lost to the pleasure he was feeling. Only one overwhelming truth could penetrate the fog of sensation in his mind: he loved this girl.

"Hayase... I love you" he said between kisses. There was no longer any hesitance or weakness behind his words. Only emotion and need. He felt her muscles freeze at the words. She turned her head away and began to stand up. Seeing her in only the tight shorts and staring up at her from the floor he felt the distance between them widening, and began to feel an intense worry building in his gut. Then, the strings of her shorts fell loosely between her legs, and she worked them smoothly down her shockingly ample butt, revealing the full extent of the swimsuit tan he'd fantasized about seeing for so many months. Her shorts fell to the floor, and she straightened as she stepped out of them.

"Take off your clothes, Senpai. Now." She turned, revealing everything. Her perfect, upright breasts standing sharply off her chest, once again heaving up and down. Her slim, athletic figure which he knew came from martial arts, but he could only see as balletic. Her back arched coyly to hide her crotch between her legs. However nothing could prepare him for the expression of lust he saw on her face. All of her earlier hesitance was gone, replaced by the naked avarice of a hungry animal. Her eyes were locked on his now, and he knew that he couldn't look away if he tried. He began to take off his shirt.

Before he could even get it off, she was moving towards him. As his shirt came over his head, he felt her hands grab hold of his shorts and start fumblingly trying to pull them down. He had to lay back onto the floor to help her. She removed them so quickly he wasn't sure they were still in one piece. Suddenly she was on top of him, her hips on his, pulling his shirt off the rest of the way as well, with his cock being caressed by the lips of her pussy. She began to rock her hips as she leaned down over him, her hands finding their way around the back of his neck as she squeezed her body against his. Every second was an impossible paradise he never wanted to end. However the intensity of her motion was too much.

"Please, I'm gonna..." he weakly moaned.

"What? You can't! I don't have any protection, Senpai! Let me move then if you're gonna come so quickly..." she said, as she slowly shifted her weight off of him, and laid with her arms across his chest, one leg intertwined with his. As she pulled her hips off of him there was a wet sound, and he realized his cock was drenched by her. Her hands moved down his chest, spreading a magnificent cool tingling as they went. They moved down his stomach, over his waist, and moved across his thighs. Faster now, they started moving upwards, and before he knew it, one was cupped around his balls. Her grip was warm and gentle, but the sensation paralyzed him. She moved her hands upwards, and gripped his wet cock hard. She started moving her hands up and down.

"Does that feel good, Senpai? I've never done this before..." She said it reservedly, but he could sense her excitement behind it.

"It feels incredible, Hayase, keep going!" He said honestly. While she worked his cock with increasing confidence, her head was laying across his chest, and his need to touch her was growing to an intolerable level again. She was moving her crotch against his thigh in rhythm with her hands, and he felt warmth spreading down his leg. He had to do something.

He grabbed her ass with both hands and roughly pulled her body a foot higher up his. Now he could kiss her properly, and he felt as if nothing in the universe would stop him from doing so. As he did, his hands responded to the undeniable magnetism of her skin, caressing, and searching. Without thought, his right hand found its way between her legs, and he began to softly caress the lips of her pussy. As wet as she was, it was easy to slip his middle finger between them, and he felt her body react, the hands on his cock tightening even further and her back arching slightly. She gasped, and her lips stopped moving for a moment, before resuming with even more force as he began sliding his fingers up and down.

All their motions slowly synchronized, and they became one being. He began to feel Nagatoro's body quivering, and he could feel his own body building in response. One of her hands disappeared from his cock, only to reappear on top of his hand, between her legs.

"Like this, Senpai" she begged, between kisses that had become more sloppy and careless, more desperate and searching. She was making a mess of his neck now, sucking like a vaccum right below his jawline.

She positioned his hand at the top of her pussy, and moved his fingers in a circular motion. Her body quivered again, and her hand on his cock tightened. She gasped, "Keep going, keep going!"

Every moment it seemed like he couldn't feel any better, and yet it kept building more and more. He could feel the same tension building in her body, and he knew she must be close as well. The sensations were too much. He couldn't last any longer. His cock started to convulse, and his mind whited out. Suddenly her lips stopped moving, and her legs snapped closed around his hand. Her hand clamped hard around his cock, which was drenching her chest and stomach, continuing to convulse over and over, as he felt her pussy doing the same around his hand. They laid there, intertwined and unmoving, gasping for the air they'd deprived themselves of in their need for each other.

Nagatoro moved her head onto his chest again. He felt no less for her now that he had before, but now he'd come down off the high. He was worried he'd gone too far. She was covered in his semen, and after all, she'd never said she loved him back. Worry once again built in his gut. This time he fought it back. This was worth whatever the cost turns out to be, he thinks.

Nagatoro looked up at him, satisfied and lazy, and said, "Next time you better bring a condom, Senpai."