School was out. It was once again for Rumi's favorite time of year, summer vacation. It was just a time where she could run around doing whatever she wanted and going wherever she wanted, the freedom was intoxicating. Sure there was the summer training camp later in the summer she had to worry about, but that was just kind of a bonus because they'd end up going somewhere cool, and then she could kick Mirio's non-existent ass all day.

Rumi grabbed onto the rocky cliff face that led to one of her favorite parts she found running around as an unsupervised teenager. Technically it would be easier for both her and Izuku to just use their quirks and jump there, but what was the fun in that? Actually, that did sound like fun, maybe after they made their way to the top. Dangling from nearly one hundred feet up off the ground she glanced down towards her boyfriend.

His overstuffed bag wiggling back and forth as he made steady progress up the cliff, so far he hadn't let the rope between them— their lone safety line—go slack, not bad for his first time free climbing. When she told him about this camping trip he had been more than down for it. Though, he did start blushing a whole lot when she said that they would be alone for the whole weekend.

Izuku's mom had been more nervous about it, but that ended when Rumi assured Inko that she had done this before and that nothing was going to happen.

Spoiler, something was going to happen.

A lot of fun things were going to happen.

Naked fun things were going to happen.

That and it was Izuku's birthday! Well technically his birthday was like a day ago, but this was technically more or less her present/party for him!

"You doing alright Izuku?" She called, smiling down at him, the scars on his arms visible thanks to his tank top, those muscles he had been working hard to develop were on full display as well. Now if only she could get him to take it off. Actually, that was going to be really really easy.

Ever since she had seen him fight All Might, she had been increasingly eager to find an excuse to pin him against something and have sex with him. But his home was a no go, and her home was a no go, and she didn't feel like just dragging Izuku into a love hotel. Besides, she wanted him to be just a bit rougher than what drywall could handle.

And she had no idea if she was loud or not!

She might be loud.

She probably was loud.

So instead, she planned to nail him under the stars miles away from civilization, that was totally romantic or some shit.

"Just fine," Izuku smiled up at her, a bit of sweat adorning his forehead. He made climbing the cliff look easy. "We're almost there right? The grounds getting a bit far away."

"You jump higher than this."

"Yes, but I'm still working on landing."

Fair.

"Well, if you do fall, I'll catch you again."

"Tempting offer."

"But, if you make it all the way to the top I'll give you a reward."

Izuku stopped to look up at her again, his eyebrows raised. "What kind of reward."

"Ohh, you'll just have to find out."

They finished the last twenty or so feet of their climb and arrived at a slightly slanted plateau far enough away from Tokyo that they couldn't see Mount Fuji, let alone the city proper. A sparse, forest made up much of the area, and the path that she once used was overgrown with grass and other shrubs. Through the trees, Rumi spotted their main goal.

A small spring-fed lake that was always just the perfect temperature, it really felt like it was a hidden tropical paradise in the middle of japan. Most of the animals around here were small rodents, birds, or other herbivores that could make the trip. "Come on Izuku, this way!"

Rumi unhooked the rope that bound her and Izuku and sprinted through the brush well aware of the few scrapes she got from a few angry branches but chose not to care. It was her choice to wear short shorts, mostly because she knew that Izuku's brain stopped working whenever she showed off too much thigh, which was why he tended to need a second whenever she showed up in her hero costume which was pretty much thigh city.

Rumi arrived at the rocky shore of the lake and took in a great big breath of air, her arms extended out wide. It was so great being out in the middle of nature.

Now to strip!

Izuku walked up beside her and placed his bag down next to hers, his mouth was hanging open as he looked around the area completely captivated. "Wow Rumi, this place is aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa—"

Izuku stopped working as he glanced at her the very moment she tossed her shirt and bra onto the ground. "What's wrong Izuku?" She asked, wiggling her hips as she pulled off her pants and underwear. She kicked off her shoes and removed her socks before throwing her shorts at Izuku. "Bunny got your tongue."

"Rumi!" His voice cracked, and his face was really red as he looked at her now discarded panties. "Why are you—"

"We're all alone out here Izuku," She purred, slowly wading into the water, her feet sinking into the silt like sand that was mixed with large stones. She faced him, keeping her eyes locked on his, even while he struggled with finding someplace to look. "Why don't you join me," She pushed back, submerging her body into the water and floating back just a bit.

The water was clear, just cool enough to be refreshing, yet warm enough that she didn't feel the same shock from entering the water.

She pushed up and saw Izuku still standing there. "Well, I'm waiting!"

Izuku tossed her panties to the side and started to strip as well, his boots being tossed to the side, his tank top next, followed by his shorts, showing off his naked well-muscled body to her. He was hard. And. From where she was. He looked large.

Rumi swam away from Izuku as he dove into the water and sped towards her.

She half let Izuku catch her and half caught him, grabbing onto his waist as they found an area in the lagoon just shallow enough for him to stand. His arm wrapped around her waist as he pulled her in tight, one hand grabbing onto her breast. His firm, calloused, warm, hands sent a shiver up and down her entire body.

They kissed, her legs on his waist, her hands in his wet tangled hair, as she felt herself growing hornier and hornier as Izuku's hands touched more and more of her. He was groping her. Squeezing her breasts, teasing her nipples, grabbing her ass, while she all but ground against him.

She felt his muscles, his scars, his body with everything she could. Their kiss stopped for a moment, Izuku pushing her back as he moved to suckle on her nipple. He took the nipple into his mouth, her head rolling back as he nibbled slightly, his teeth sending another shiver down her whole spine. She could feel his erection pressing against her thigh, it felt even more massive up close, and her body felt like it was ready for him. Ready for all of him.

Their kissing continued, the undisturbed peace of this tranquil area allowed them both to just never stop.

Her entire body felt like it was on fire, and Izuku was fueling it more and more, giving her exactly what she wanted with his every single touch. He kissed her, over, and over, and over, all over her body, sparing nothing from the top of her head to the inside of her ears.

It was sex without sex, an endless cycle of foreplay that was as rewarding as it was frustrating.

"Rumi," Izuku's voice was deeper, his chest barely above the body while she floated there hanging over him. "We should set up before it gets dark."

She hated that he was right.

"Fine," Sigh sighed wrapping her arms around his neck and placing her chin on his shoulder. "But, don't think for a second we're not continuing right where we left off."

"I know, That's why I'm not even going to get dressed."

XXXX

Rumi had teased him for what felt like his entire life. First was the way she moved her hips as they did the hike, constantly making sure that he had a great view of her ass as she led the way, then, making sure that she was above him during the climb. Then she just got naked. There was nothing flashy about it, no ceremony, just, bam, he got to see her fully naked just like that. Then, she baited him into the water and promising him so much more.

So now, it was his turn for payback.

Izuku watched as Rumi writhed on the sleeping bag they were going to be sharing, her naked body fully exposed to him, her firm perky breasts, her wide hips, powerful thighs, and fantastic ass was all his to touch, to explore, to stimulate. And it felt like his dick might explode without painfully hard it was. But, he wanted to keep touching Rumi.

She was being so submissive.

It felt so strange but so right. He adored Rumi's forwardness but seeing her being meek, biting her lip as he continued to explore her body, the soft ways that she begged for things, it was so refreshing. And such a turn on.

He kissed her nipple, taking the firm tip of her breast into his mouth and biting it softly, her moans spurred him on. He kissed on the bottom of her breast, moving down onto her firm stomach, leaving a trail of kisses. Her hands grabbing at the sleeping bag as he moved down, down, down. When he reached her crotch her legs moved apart, hips tilting to invite him in and showing him everything.

"Izu…" she moaned, her body arching, thrusting out her chest as she bit her lips. So that was what happened when he kissed her there.

"Please," She wiggled her hips, her eyes were a bright red in the moonlight. "I can't wait."

He nodded, spreading his legs and lowering himself down to match her entrance, her wonderful, powerful legs rested on his hips as he maneuvered himself. He pressed his tip against her entrance. "Are you—"

"Just do it!" Rumi screamed, her back arching, fingers tearing into the sleeping bag, as he wondered if she was biting her lips hard enough to draw blood.

He pressed further, his entire body shivering with the realization that he was having sex. It felt like his dick was burning from the inside out as he felt his erection double in intensity at finally being able to enter Rumi. She was wet, she was tight, and she was ready for him. It almost felt like she was sucking him in with how much they both wanted this.

Rumi's moans grew as he pressed into her. It was a calling and he found himself groaning in the process, his eyes rolling as he felt his entire body both relax and stiffen. It was abrupt, but, somehow, he felt like an adult now.

"Keep going," Rumi called, her hips wiggling as her stomach muscles roiled with what he could only assume was pleasure. "Don't hold back." Her hips locked around his waist. "Give it all to me."

He started to move, his strokes were shallow and fast at first, he watched Rumi's face, enjoying the way her face twisted as he moved, her breaths matched his, her hands grasping for him, her legs tightening their hold on him as he started to pump in and out of her faster and faster, her perky breasts were jiggling with each thrust and her eyes were rolling into the back of her head.

"Mmmm," Rumi whined, her voice was soft, barely louder than his grunts as he continued to move in and out of her. He grabbed her breasts with his hand, keeping one hand on her hips to hold her in steady. She let out a scream, back arching once again, her upper body supported by her head. "Fuck!"

He leaned forward, one hand on the ground and the other around her waist as he continued to move his hips. He wasn't even sure what he was doing anymore, he was just doing whatever felt good, whatever made her feel good.

"Izuku!" She cried hands grasping forward and wrapping around his shoulders as she pulled herself up, and hanging off of him with her legs, arms, and hips, her powerful muscles allowing her to match his pace. She kissed him, moaning deeply as her body continued to tense.

He felt her tighten up around him, squeezing him for all she was worth as she moaned and screamed all at once.

That was her calling card to him, her signal that she had just came. Hard.

And his body responded in kind.

He felt his entire body pulse down into his dick as though he was trying to send everything into her. And then release. It felt like he spent ages cumming as his dick pulsed, and pulsed, and pulsed inside of her, that one orgasm draining him dry.

Izuku fell on top of Rumi, kissing her softly as his hips continued for no real reason.

"Holy shit Izuku," Rumi moaned in between their kisses. "I think I can get addicted to that."

Izuku nodded. "Yeah. That was. That was—"

Wait.

"Wait! I came inside you! Is that okay! Won't you get pregnant? Oh man, I wasn't thinking Rumi I'm—"

"Shut up it's fine, I won't get pregnant," She rolled her eyes and grabbed her water bottle. "I have a thingy."

"Oh."

"Now drink, up, because this time, I'm going to be on top. Then tomorrow, you're going to fuck me against a tree, and then, we'll try doggy style, oh, and we should try cuddling sex, and—"

Rumi continued her long list of sexual escapades they were going to be doing this weekend.

Was he really going to go from a virgin to a sexual expert in a single weekend?

Yes.

AN: You and me baby ain't nothin' but mammals, so let's do it like they do on the Discovery Channel.