A/N: This fic is set in the movie, when the Yurus went camping. My fic is about what happens between Rise and Nana on their camping trip.

"Explode in moderation Nishigaki-sensei!" an elated Sakurako said as she waved to her teacher who drove off in the white bus. The teacher, being the kind soul she is, accepted Kyouko's offer to drive Ayano, Sakurako and the others to the camp site where they would be staying for the night.

Besides Nana Nishigaki, sat Rise Matsumoto in the passenger's seat. Rise was quiet as usual and looking out the window. The teacher decided that she wanted somewhere more private, away from the others, where she and Rise could experiment with explosions freely without bothering anyone.

When they had arrived at the spot Nana had chosen, Rise helped her teacher unload all of their equipment and camping supplies from the bus. Nana put up their tent and set out a foldable table. Rise laid out the science paraphernalia on the table.

"There all done. Let's have lunch. I'm starving." Nana said.

After both young women had finished eating their sandwiches, Nana prepared for the first experiment of the day.

"Ok Rise. I want you to place this explosive device inside that tree bark for me."

Rise knew the protocol. The raven-haired girl nodded and placed the bomb in the little opening on the tree bark. She ran to where her friend was standing. Nana held a remote in her hands. Rise watched as her teacher grinned maniacally, and pushed some buttons.

"Jikken start-o!"

BOOM!

Meanwhile the other Yurus watched on from their campsite, as they saw about ten birds leave a tall tree at the sound of Nana's and Rise's usual shenanigans.

"I wonder what those two are up to." Himawari commented.

"How rude of Nishigaki-sensei to disrupt the birds," Akari added.

Back at the blast site, Nana and Rise stood bewildered.

"So this device is strong enough to blow up a large wooden crate but not a tree. Interesting. It needs some work..." - Nana said as she stroked her chin.

Rise looked at her teacher in admiration and shook her head. She saw that the woman near her was one that never gave up on anything she's passionate about. She looked up to Nishigaki-sensei. Nana was her everything - her friend, her companion, and one of the very few people who understood her. She had never judged Rise for her lack of speech and only showed the girl her support. She was even her translator. In return Rise was more than just a student to Nana. Rise was Nana's lab rat and friend. They had become friends ever since Rise had entered Nanamori Middle School, when Nana was assigned as her chemistry teacher.

Nana had taken notice of her timid student. She was different from the others. There was something special in Rise that Nana loved, but she just couldn't put her fingers on it. Nana began to grow close to her, as she realized she was one of the few who understood Rise's soft whispers. When Rise was appointed student council president, they had developed a very close bond since Nana was Rise's advisor. They had to see each other more often to plan student council activities together. Whenever something was bothering Rise, the only person she felt that would understand her was Nishigaki-sensei. Nana had always listened to all of the girl's problems and worries with a caring and confidential ear. Rise had felt safe with the scientist from day one. When Rise was ill, it was Nana who visited her home and offered to look after her. Neither young woman had another person in their life that they were that close to. Hence they both really enjoyed being in each other's company.

When the "blast buddies" had finished their experiments, Nana decided to call it a day.

"Time for some rest, don't you think Rise?" Nana said as she yawned and stretched her arms. The student council president nodded.

When they had finished changing into their night clothes, they entered the cozy camping tent. Nana wore a plain white T-shirt and shorts. Rise wore a purple satin nightgown that exposed her knees and legs. Rise's heart thudded as she watched her teacher enter the camping tent, clad in t-shirt and shorts, that showed her bare chest and milky-white slender legs. She admired the shapely thighs the woman showed off, rather unintentionally.

"Is something wrong?" Nana asked as caught the girl staring at her with enlarged pupils.

Rise shook her head.

"Alright then. Good night Rise."

Both friends tried to sleep, but they caught themselves tossing and turning for over 45 minutes as a light shower passed by.

They were now facing each other. A large pair of wine-red eyes gazed into ruby orbs.

"Can't sleep huh?" Nana said as she broke their gaze.

The shower had left the atmosphere cooler than usual. It was hot in the day but cool in the nights in that particular area, but somehow Rise was feeling cold.

Rise pulled the cotton sheets up to her chin. Nana having noticed this, inched closer to Rise. Now they were only inches away from each other under the small camping tent.

Nana wrapped her arms around Rise's neck. Rise placed her arm around her friend's back in response.

"I'm cold too but we'll keep each other warm" Nana said. They both gazed into each other's eyes again, neither girl wanting this moment to end. Rise was suddenly overcome by an uncontrollable urge to kiss her friend's luscious pale pink lips. She leaned in and planted a kiss on Nana's lips. They felt so warm and soft to the fifteen year old.

"Rise uh…um you just kissed m"

Rise leaned in again and kissed her teacher on the lips. Nana saw fireworks as she felt her friend's lips on hers once again. Rise deepened the kiss. One kiss soon turned into a heated make out session, as both young women began fondling each other's breasts as they French-kissed. Nana was softly moaning. When she realized what they were doing, she broke the kiss and sat up.

"Rise, what are we doing? I'm sorry. I'm your teacher. It's not right for me to…"

The student council president sat up too and placed her index finger on the teacher's lips to shut her up.

She whispered something. Nana heaved a sigh before she responded.

"I love you too Matsumoto. You have no idea how long I wanted us to do what we just did. But I never could have said anything because I feel like… well I feel like I would have been taking advantage of you, since I am your teacher after all."

Rise whispered something again to Nana.

"Really? So you're saying that we should not worry about what other people think if we really like each other? Matsumoto, I have always loved you, even more than a friend. I am stunned to find out you feel the same for me. I'm glad that we can be honest with each other." The silver-haired woman paused for a break and sighed. She continued "Maybe you are right. We love each other, and we shouldn't care what other people think about us. But soon you will be graduating. You'll leave me and this will all be meaningless. Do you think it's worth it?"

The girl looked at her teacher intently and furrowed her brows. Her whispers were a little louder. When Rise had finished giving her teacher a piece of her mind, Nana was stunned at the girl's reaction to what she had said.

"Get an apartment? Live together after you graduate? Are you sure that's what you want? I don't want to hold you back from anything."

The girl nodded.

Nana smiled. "Alright. If that's what you want, I want that too." Nana cupped the girl's cheeks with both her hands and said "You can live with me after graduation, once Mr. Matsumoto approves. He is your father after all, Rise… I feel relieved knowing that we have a chance together."

Nana kissed the girl deeply this time. She used enough force to make Rise land on her sheets. Nana was on top of Rise as she continued kissing her and caressing her sides. Rise was in heaven. If this was what it feels like to be kissed, she wondered what it would feel like to have sex. The girl slowly reached for the teacher's white shirt and pulled it off with both of her hands.

Nishigaki-sensei's breasts were on display, since she found sleeping bra-less to be comfortable. The teacher was no stranger to Rise's bravery because Rise was brave enough to follow through with all of their life-threatening experiments together. However what the teacher was not aware of, was her friend's sexual confidence.

"My my my, is someone feeling brave tonight?" Nana said.

Rise just shifted her gaze and blushed at Nana's comment.

"Do you really want us to…"

The teacher could not complete her sentence because she found it hard to speak, as the girl pinched her nipples. She became aroused at Rise's touch. Her hand felt so tender on her body. Her nipples hardened in response to the dark-haired girl's caress.

"I'll take that as a yes."

Rise just blinked. She had a cool but impatient look on her face.

"Well since you are sure" Nana said as she raised Rise's nightgown. It went all the way up to the girl's chest. Rise sat up for a moment to completely remove it from her body. Now her naked body was fully exposed to her teacher. She only wore black lace panties and a blue trainee.

Nana admired Rise's delicate naked form in the yellow light of the camping tent. She appeared more grown up in Nana's eyes. She wore her long black hair down. The teacher was accustomed to seeing her in Nanamori's uniform, but clad in only her underwear, the girl looked more mature to the teacher. She noticed Rise's panties had a wet patch. This made her remember the time she had given Rise a sponge bath when she was ill, and saw the same wet patch on her panties.

The girl blushed for a second but had the courage to whisper something.

"So you've never done this and you want me to be your first?"

Rise nodded.

Nana was so happy she got to be her girlfriend's first. This was a moment she would never forget.

"Well in that case, you just relax and let me do all the work. Tell me if you're not comfortable with anything we are doing, and I will stop, ok?"

Rise nodded again. She was getting so excited for what was about to happen. She couldn't believe that she was going to share such a special moment with the woman she loves. Deep down she knew this was right. Their love for each other could never be wrong. She had heard the other girls boasting about their sensual adventures with their lovers, but she never knew that she would experience sex at such a young age too. She didn't care - once she did it with someone she loved, that's all that mattered.

Rise sat up to let Nana unhook her bra. She laid down again. Nana proceeded to cup Rise's breasts. She sucked on a nipple as if she was a baby nursing from its mother. She took the other nipple between her thumb and forefinger, rubbing it and gently twisting it. Rise was in a state of nirvana as her teacher worked her magic. Next Nana sucked on the girl's other nipple, making lewd slurping noises as she did so. Nana glanced at Rise's panties noticing the wet patch from earlier had grown.

Rise felt Nana planting kisses on her abdomen, going lower and lower until she kissed the waistband of Rise's panties. Nana let her tongue wander on one side of the panties, pushing inward until her tongue touched Rise's soft labia. The girl shuddered beneath her partner as she felt the scientist's warm tongue tickle her soft center. Nana quickly slid off Rise's panties, which were completely soaked by now. Both watched as it dripped sexual juices onto the sheets.

All she wanted to do was to bring her girlfriend and now lover, to the peak of pleasure. She licked her clitoris like a kitten lapping up warm milk. Hot sticky cum oozed out of Rise as she did this. She brought her tongue to Rise's entrance and ate all of Rise's juices like there was no tomorrow. Rise tasted like honey, salt and sweat. Nana rubbed Rise's clit in circles as she continued licking and eating the juices that escaped the girl's pink folds. The stimulation made Rise's breath erratic.

A few minutes went by when Nana raised up and looked at Rise directly in her eyes. "It's time. Rise are you ready?"

Those large pupils pierced her teacher with burning lust. Rise nodded slowly.

"It's ok Matsumoto. You have nothing to be afraid of. It may hurt for a couple of seconds but after that it will feel good." Nana took Rise's hand in hers and nodded in an assuring way to her "I will be gentle."

She rubbed two fingers over Rise's outer lips. After a few ups and downs, her index entered Rise's dripping wet canal. Her finger reached Rise's tightest part and she pushed a little further, causing the girl to arch her back and shake her head in both pain and pleasure.

"See? That's it. Are you ok?"

Rise recovered from her state of ecstasy and nodded, to indicate that she was fine and ready for more.

The silver-haired scientist pushed two fingers inside of Rise's vagina this time. Rise's hips bucked in her teacher's hand. Nana's fingers went in and out of Rise slowly. As she pleasured the girl she leant forward to French-kiss her. Nana was surprised by Rise's actions, as Rise reached for the waistband of her shorts and pulled them down. Nana completely took them off with her panties. Rise slid two fingers in Nana's wet core. They both moved like that, in perfect sync with each other. This went on for about 10 minutes until Rise began to feel Nana's walls tightening around her fingers. Nana felt the same in Rise. Soon they both came at the same time. Nana collapsed on Rise from exhaustion. Her head rested against Rise's chest. She could have heard the pounding of Rise's heart as it beat rapidly.

When the couple recovered from their mind blowing orgasms, Nana looked at Rise.

"Rise I want you to know you are the only one I love. What we did tonight was special. I will never forget it. I love you" Nana said, as she kissed Rise's sweaty forehead.

Rise brought her lips to her new girlfriend's, and their lips met again for the final time of that night. Their legs intertwined as they slept peacefully to the sounds of a thousand chirping bugs.

A/N: You may be wondering where I got that sponge bath reference from but it is from my other RiseNana fic called "Patient for the day" which you should check out if you haven't already