Author's Note: Gudako's called Ritsuka Tachibana in this story for anyone confused.

Nothing could truly express Ritsuka's feelings right now. He normally would be able to keep himself calm, even when surrounded by the more insistent, and needy Servants, but right now, he was feeling multiple emotions at once, and was unsure of what to do about it.

"Ritsuka, you okay? You look like you've seen a spirit or something."

"I-I'm fine Ritsu…! J-Just a little hot is all…!" said Ritsuka, trying to keep his cool. He was currently sitting in the makeshift bed next to Ritsuka Tachibana, his co-master, High School Best Friend, and biggest crush of his life. Since the two ended up on this isolated Island with Mash, and the Servants, they agreed to share the very first cabin made for them. But, he didn't expect that they would only have enough materials to make only one big bed for the two of them.

"It'll just be for a little while, Masters. Till we can find enough logs, rocks, and metal around to make a second cabin, so you both can have your own space." He remembered Scathach saying earlier. He could only sigh as he tried to keep his cool about the situation.

"Let me guess, nervous about sharing a bed with a pretty girl, hmm?" Teased Tachibana, as she nudged him.

"J-Just not… something I figured I would do. Kiyohime likes to sneak in my room, but she never gets into the bed with me. Kinda just… watches me sleep…" He said, feeling his skin crawl imagining her watching him while he slept.

"Yeah… It creeps me out when she does that…" said Tachibana as she sighed, laying down on the bed. "Well either way, it shouldn't be too big of a deal. You've stayed over at my house in the past."

"Yeah, but I always slept in the guest room. Or on the floor of your room if I ended up falling asleep in there, if we were up late playing games." said Ritsuka as he laid down next to her.

"Oh, don't be so nervous, Ritsuka. It's just for a little bit," she said as she yawned. "Unless, you would prefer if it was Tamamo or Kiyohime in here with you, instead of me." she teased.

"Knowing those two… I wouldn't survive the night…" he said. "Alright, I'll try to keep my cool then. Sorry for being all weird about this."

"It's fine. If it'll help, we could just sleep back to back to make it less awkward." Tachibana suggested.

"Wouldn't be a bad idea. But, you toss and turn in your sleep."

"Hey! It's hard to get comfortable! Specially since we're basically gonna be sleeping on logs with large tree leaves as our covers! Seriously… being stranded on this Island is gonna suck…" she complained, pulling a few of the leaves over herself.

"Yeah… At least the others will help us find food and water." He pulled the leaves over himself as well; the two now back to back as they tried to get some sleep. Ritsuka felt a little uneasy, so he tried to focus on sleeping.

It had been about two hours since the two went to sleep, and Ritsuka found himself waking up. He was feeling too hot and sweaty from sleeping under the leaves combined with the warm air that flowed in from the window. He was thankful that Scathach managed to make these swimming trunks for him to wear, otherwise sleeping in his regular Chaldea uniform, or even just his t-shirt and boxers would feel like hell with the heat. Sitting up he pulled the leaves off himself trying to lessen how hot his body was feeling. He looked over at Tachibana, and saw she was also sweating from the heat, no longer sleeping under the leaves. She groaned a little in her sleep from being slightly uncomfortable and hot, turning over, now facing him as he tried to sleep. Ritsuka could see that her bikini top was wet from sweat, her nipples slightly visible as they poked against the fabric of her top. Ritsuka looked away quickly, feeling his heart beating faster and his face getting hot. He could feel himself getting aroused, as he laid back down, his back turned to her, as he tried to distract his mind.

'D-Damn it… Why now of all times…?! This was what I was afraid of!' He thought to himself, as he felt his cock fully rise as it poked against his swim trunks. He felt something tapping his shoulder, as he turned back quickly to see it was Tachibana, fully awake.

"You alright, Ritsuka?" she asked.

"U-Uhh… Y-Yeah, just really hot… so it's hard to sleep…" he said nervously, trying to make sure she didn't look at his front.

"Same here… I thought it would be cooler since we're close to the ocean, but it's still hot as hell in here…" she complained. "Freaking tree leaves don't do shit for cover…"

"Y-Yeah… Well, we'll just have to try to bear through it till morning." he said, trying to not look at her.

"Hmm? What's with you?" she asked, nudging closer to him.

"N-Nothing! Just hot is all!" he said, trying to hold himself more. He could feel leaning against him, her breasts pressing against his back, as his heart began to beat faster, his body getting warmer from feeling her chest brush up against him.

"Seriously, are you alright? You've been holding yourself for a bit." she asked, leaning against him to see what was wrong.

"R-Ritsu, I'm fine, I swear..!" he said.

"... Do you have an erection?"

"R-RITSU!" he yelled in embarrassment. She couldn't help but giggle at how he reacted.

"Dude, relax, I get it. I don't blame you for getting turned on sleeping next to me." she said, patting him on the shoulder.

"I-It… wasn't cause I-I was sleeping next to you…" his face began to flush red. "I-I umm… When you were sleeping, I turned to see you, and umm… I can see your breast through your bikini top… cause it's wet…"

Tachibana looked down at her chest, and saw that her top was wet from her sweat, and her nipples were visible through the web fabric.

"Oh… Geez, I didn't know you were such a pervert, Ritsuka." she teased.

"H-Hey! I-I didn't look on purpose! I-I just happened to see when you turned over in your sleep!" he defended.

"Sure sure. Well… it's hot right now, we're both awake, and you've got a hard on, so might as well help you deal with it." she said.

"Wait what-"

Before he could get his sentence out, Tachibana pulled him over, getting a good view of his erection poking against his swim trunks.

"Oooh~ You did get a hard on! I didn't think I would ever see you of all people as a pervert!" she teased again, as she reached over and grabbed his covered cock.

"R-RITSU!" He was quickly taken aback by her sudden grab. He wasn't sure how to feel, having her suddenly grab at his member while he was erect.

"Easy, Ritsuka. I'm just gonna help you out a little. I'm sure you've probably had this fantasy about me a few times."

He looked away embarrassed. "M-Maybe… once or twice…" he admitted.

"See? Just relax for a bit, and let me help you take care of this."

She began to slowly stroke his cock through the swimming trunks. Trailing her hand up and down his shaft slowly through the fabric, gently rubbing the tip of his cock with her thumb gently. Ritsuka recoiled back from the sudden sensation. Despite not feeling her hand on his member raw, the very motion of how she stroked him still sent shivers down his spine. He couldn't believe the girl he was in love with was now giving him a handjob. She slowly stroked the shaft of his member, using the fabric of his swim trunks to help stimulate his cock.

"Wow, I've never seen you tense up like this, Ritsuka~" she teased.

"N-Never… thought… you'd ever do this for me…" he said through short breaths.

"Well, I won't lie to you, I've thought about this once or twice before. Just never thought it would be like this." she admitted. She continued to pump his cock, slightly increasing the speed of how she stroked him, causing him to groan from pleasure. "Hmm, how about we do this for real." she said.

"W-What… do you mean…?"" asked Ritsuka.

Tachibana smirked at him as she pulled down his swim shorts, now seeing his cock standing up fully erect. A blush spread over her face as she was surprised at the length of the boy's cock.

"W-Wow… I… didn't realize you'd be this big…" she said, reaching to grab at it once more.

"D-Don't… say it like that…" he said embarrassed.

She grabbed his hardened member, stroking it once more, feeling the hard shaft against her hand as she stroked it. Pumping it back and forth, her fingers trailing against his cock as she tugged it. She rubbed her thumb against the cockhead, feeling a bit of pre-cum leak out of it.

"R-Ritsu…" groaned Ritsuka. His mind felt hazy from the pleasure that was running through his whole body. He reached his arm over to her, and slipped his hand into her bikini bottom, and began to rub at her clit softly. Tachibana felt a shock through her body at his sudden touch.

"R-Ristuka…!" she said through a soft moan. She hadn't expected him to suddenly start to rub at her clit, and the feeling of it sent tingling sensations through her body. Ritsuka gently rubbed at her clit, pressing his finger against it as he teased her. He reached down further, and rubbed her labia with his finger. Gently brushing it against the folds as Tachibana recoiled back from the sensation.

"O-Oh god…" she cried out gently. Ritsuka began to insert a finger into her vagina, feeling the warm sensation of it against his finger as it slid inside. Tachibana covered her mouth with her free hand, letting out a muffled moan, so no one outside could hear her. Through her sudden rush of lust, she started stroking Ritsuka's cock harder. Pumping it, and tugging it faster, as Ritsuka let out more groans from the feeling of her fingers on his shaft. He began to pump his finger into her vagina; thrusting it back and forth inside of her, brushing his finger inside of her walls slowly.

"R-Rit… suka… T-That… oh god that feels good…" said Tachibana, letting out soft exhales and moans from his finger movement.

"It's… only fair… I please you back…" he said, as he continued to finger her, quickening his pace as he thrust it in further. Feeling her twitching about from his small thrust. He could feel pressure building up inside of his cock; her strokes getting faster as she rubbed his shaft harder. He inserted a second finger into her vagina, quickening his thrust inside of her as she let out a loud moan.

"Ri… Ritsuka… I-I'm close…" said Tachibana, feeling her climax approaching.

"I… am too… Ritsu…"

The two continued to pleasure one another; her hard and fast strokes on his cock, and his deep thrust of his fingers inside of her vagina. Soon, muffled her own mouth again, feeling herself climaxing as she sprayed ejaculate from her vagina and onto Ritsuka's hands. Ritsuka arched up, feeling himself ejaculating semen from his cock, it spraying on the bed and onto Tachibana's hands as he came. The two laid next to each other, breathing heavily as the rush of pleasure began to leave their bodies.

"H-Holy… Shit…" said Ritsuka, feeling his heart slowly calming down.

"W-Wow… that felt… really good…" said Tachibana. She looked at her hand that had his semen on it, and licked a bit of it off her hand.

"R-Ritsu?!" He said shocked.

"It… tastes a bit weird… But, I don't hate it." She said, looking at him with a smile.

"Hehe… and you called me a pervert…" He said, smiling back at her. She pulls him close to her, wrapping her arms around his neck.

"R-Ritsu…?" He asked, his face flushed red as she got closer to him. Their lips inches apart as Tachibana leans in, giving him a soft, but loving kiss. Ritsuka's heart began to quicken again, the feeling of her soft and warm lips on his as she held him close. He wrapped his arms around her waist, pulling her in closer as they deepened the kiss. Tachibana rolled on top of him, holding him close as she locked lips with him, feeling his soft lips against her own, grinding herself against his body. He ran his hands down her waist, feeling her smooth wet skin as she grinding against him. He reaches into her bikini top, and squeezes her left breast; gently massaging it. He breaks off from the kiss, and starts to kiss at her neck, trailing his mouth down her neck to her collarbone, leaving small kisses as he did.

"R-Ritsuka…" Moaned Tachibana. She kept grinding herself against him, feeling his cock start to harden once again, as she grinded herself against it.

"R-Ritsu…"

"Do… you wanna keep going…?" She asked him.

"I-I… I do… A-Are you… sure you're okay with going further? I don't have protection…" He admitted.

"It should be fine… I… remember Da Vinic giving me some lecture on Magic Circuits and what not… Said how Male Magues' sperm can be used for Mana, and if ejaculated into a Female Magus, it would just be considered transferring mana between the two. So… hopefully we should be safe in that regard…" She said, though still a bit unsure how truthful that information was.

"Well, if you're sure, then alright…" He said, positioning her above his member.

"Take it slow, okay…? It's… still both of our first time…"

"I'll be gentle, I promise…" He slowly lowered her down onto his cock, feeling it slowly break through her hymen as it entered into her vagina. Tachibana let out a yelp from the pain, clinging onto his body as she felt shocks of pain coursing throughout her entire body; blood trickling down her leg and onto the bed.. Ritsuka continued to slowly insert his member into her, feeling the walls of her vagina squeezing his cock as it slid past them. He groaned from the pleasure, a sensation of pure bliss rushing through him as he began to slowly thrust himself into her, feeling the slight resistance of her vagina squeezing his cock as it slid back and forth inside of it. Tachibana clung to Ritsuka, breathing heavily as she leaned her head against his neck

"R-Rit… suka… O-Oh… fuck!"

The pain that persisted inside of her lingered, making her waist ache, but she felt pleasure begin to build up; her mind began racing from the ecstasy that was increasing inside her body. She started to grind herself up against him, feeling more of his cock sliding inside of her with each thrust he made. She sat up and grabbed onto his shoulders; riding him slowly as he grabbed onto her hips.

"R-Ritsu…" He groaned out, saliva dripping down his mouth as she watched her slowly ride on top of him.

"R-Ritsuka… I… I never thought… we'd… ever be like this together…" Said Tachibana, as she trailed his hands down his chest, feeling his firm and slightly toned abs. She begins to bounce on top of him, feeling the force of his cock slipping in and out of her; the sounds of the two's bodies slapping against each other echoing throughout the cabin room. Ritsuka reaches up and grabs at her breast, firmly squeezing them both tight as he sits up, and starts to kiss at her chest, leaving small kisses down toward her right breast, before taking it into his mouth, sucking on it softly.

"A-Aaaaah! Ritsuka…!" She cried out, holding him close to her as he sucked on her breast. He rolled his tongue around her nipple, making Tachibana shiver from the sensitive sensation. He pulled at her nipple a bit with his teeth, not pulling too hard and hurt her, but enough to make her groan in pleasure. He pulled back and held Tachibana down onto the wooden bed, holding onto her waist as he began to thrust himself into her a bit harder and faster. His hard cock burrowing deep into her vagina, brushing against her inner walls harder; the rush of ecstasy beginning to overtake the two's minds, as they embraced for another, more lust-filled, kiss. Tachibana forced her tongue into Ritsuka's mouth, rolling her around as the two embraced one another. Ritsuka held onto her hips tight, as Tachibana wrapped her legs around his waist, forcing him to burrow his member deeper into her. The sounds of the wooden bed creaking could be heard from outside, as Ritsuka thrust into Tachibana faster; the latter grabbing at his back and clinging to him, as her mind was racing from the pure pleasure she was feeling.

"F-F-Fu… ji…! I… I can't… hold it… anymore!" She cried out, her eyes beginning to roll back as her climax was on the horizon. Ritsuka could feel pressure building up inside of his member, his body tensing up as he makes one final thrust inside of Tachibana, before ejaculating inside of her; a wave of semen rushing out of his cock, as it flowed into her vagina, and into her womb. Tachibana arched back as she let out a loud moan, as she reached her own climax, feeling the ecstasy begin to leave her body as she laid back against the bed, breathing heavily from the intense amount of pressure she built up. Ritsuka laid on top of her, feeling his body's energy begin to run out as he laid there.

"T-Ta.. chi…" He said, through tired and haggard breaths.

Tachibana pulled him close as she gave him another kiss. "That… was… amazing," she let out.

He smiled a tired smile at her, as he used his remaining strength to lay next to her, and pull her into a gentle embrace. She wrapped her arms around his body, and laid her head against his chest.

"So… umm… what now..? I mean, what does this mean for us now…?" asked Ritsuka.

"Hmm… Well… what do you want us to be now?" She asked him back.

He hesitated for a moment, thinking what would be the best thing to do in this situation. He cared for her deeply, more than most realized. He loved her; truly and genuinely loved her, but he was fearful that he wouldn't be the one for her. Yet, after this night of passion, he at least had to take that chance, and see how she really felt about him.

"I… Ritsu, I… I love you… I genuinely love you… I've loved you for so long now… You've always been so kind, friendly, helpful, loving, hardworking… You accepted me, despite my problems and mental health… You cared for me, and stood by my side when I was at my worst… I… I would love nothing more, than to be able to show you how much I love you… To be with you, and spend my days with you…" He finally said, his heart racing once more as he spoke his true feelings to her. They both laid there for a moment, neither saying anything as he waited for a response from her. Fear began to grow as he felt his chest tighten.

"You know… I had a feeling for a long while now that you really liked me. Like, really really liked me. But, I was always unsure of myself how I felt for you; what you really meant to me beyond just being my best friend. But, after tonight, I think I finally understand what you are to me." She said, as he held his hand, intertwining her fingers with his.

"You're not only my best friend, but you're someone… I love. Someone that I love with my whole heart, and my whole soul… You and I have spent so much time together before we joined Chaldea, and even when we came here, we've had each other's backs on every mission and battle… You'd protect me, and I protected you. We support Mash and all the Servants, while spending time with them, but still always found time to hang out together. I love every single last one of them with every ounce of my life, but…" Her voice trailed off a little. Ritsuka held up her head so he could look her in the eyes.

"The bonds I share with them aren't like the bond you and I share…" She said, as she leaned against him, resting her head on his shoulder.

"Ritsu…" He rested his hand on her head, gently running his fingers through her orange locks as they two laid there in each other's arms.

"I love you… Fuji… I love you so so much… I was always unsure if I loved you like this, but now I'm positive that I do. I want to be with you, and love you even more than before…"

"Tachi…" He felt the tightness in his chest subside; his heartbeat racing as he pulled her in for a gentle, but loving kiss. The two laid there, embracing each other as they kissed. Tachibana pulled back, and smiled at him, her cheeks flushed red.

"Fuji…"

"Tachi…"

The rays of the sun beamed down upon the Island as Mash awoke from her makeshift bed. She let out a pained groan as she stood up and stretched, feeling her body slightly sore from sleeping on large tree leaves for a bed.

"Ugh… Can't wait to make an actual bed to sleep on." She said, as she stretched out her back. Fou yawned as he jumped up onto her shoulder.

"Good Morning, Fou."

"Fou Fauw…" He chirped as she walked off toward Fujimaru and Tachibana's log cabin. She knocked on the side of the cabin as she peaked in.

"Fujimaru-Senpai, Tachibana-Senpai, it's morning." There was no response from inside as she walked into the small cabin.

"Senpais?" She called out again. She walked over to their makeshift bed and saw the two were still asleep, holding each other in one another's arms, smiles across both their faces as they slept. Mash couldn't help but smile herself; feeling at ease and comforted seeing both their warm smiles as they slept peacefully.

"Come on Fou, let's let them both rest a little longer, and go get breakfast ready."

"Fou, Kyuu!"

I'm still not too great at writing smut, so if anyone has any advice or tips to improve, by all means offer them so I can write stories like these much better...