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Teach me, Subaru!

Summary:

It was just another relaxing day at the manor - or it should've been.

Subaru and Emilia were spending time together as they usually did, laughing and giggling like a pair of dunderheads in love.

Until Emilia asked a certain—rather unexpecting question.

"Hey, Subaru...how are babies made? Do you know?"

One-shot

Notes:

I can't lie, I tried writing a ton of other fics, starting up other drafts, being thousands of words into them, and just not feeling the spark. So I thought: "Man, what would give me that spark back?" And then it clicked.

EmiSuba. Nothing in life brings me anymore joy then writing about these two. And smut is just something I'm unfortunately good at. BUT I DON'T CARE!

I've also made up my mind. I will be shipping NO ONE with Subaru unless it is either Emilia or Satella. I'm sticking to them and them only. No Priscilla, no Crusch or Ana, none of them. ESPECIALLY no Rem. (That might change, because I do have a friend who can and will threaten me.)

I—alone, am the #1 EmiSuba lover.

And I—alone, shall carry that weight until my body meets the grave. And even beyond, shall I love them both.

(See the end of the work for more notes.)

Work Text:


Manor.


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Nothing could take away from the peace that Natsuki Subaru was experiencing. If anything, this was probably the best he's felt in awhile. Sure, politics, camp management, and other things along that nature were still abudent, but he got to spent more time with Emilia.

And he gladly took on all that work, because he was deemed the half-elves knight. His heart still raced a thousand miles every time his mind went back to those sweet, tender memories. 

Moonlight dancing along her hair and lips, as well as giving a bright glow to her amethyst eyes. There was no sight more beautiful than he had seen. Not only that, she was extremely sexy in that royal gown! 

How they stood together under the night sky, talking about reflecting on everything that had happened to them. It was a memory to behold and cherish. The moments after that were just as sweet, as they danced across the floor with linking hands.

But enough about the past. Currently, after walking the garden and smelling the flowers, and eating some delicious treats made by Frederica, the half-elf and her knight sat together - alone, drinking some tea.

Subaru had some...interesting thoughts about tea. It gave a sense of bad memories, but then again, what doesn't bring bad memories? And the tea served here was far better than whatever that nasty Witch had to offer.

And it was simply better because he was with Emilia.

They chatted about a few topics. The Royal Selection and other candidates, the deal with the Sanctuary and Subaru making sure Emilia was okay. Also some simply topics like how their day was or how lovely the weather had been.

Subaru smiled as he brought up the cup of tea to his mouth. "The day was going nice and well. Spending my time with Emilia-tan is always so nice~" Subaru thought with glee. Nothing was ever as good as sitting and talking to the one he loved.

Peeking one eye open, he saw Emilia with a slight blush and contemplating about something. The question probably took a lot of her brain power. "The day was going nice and well...and then, it happened so suddenly."

Parting her lips, Emilia abruptly asked. "Hey, Subaru, how are babies made?" Emilia looked to him with pure confusion. Though also with a willingness to learn. "Do you know?" She asked so simply, as if her innocence blinded her so purely.

"PFFFTT!" Such an unexpected question made Subaru spit his tea all over the table, before the silent dread was covering him like a blanket. "Did she just...ask what I think she asked?" God he was hoping he heard her incorrectly, but he knew he wasn't.

Wiping the tea away from his lips, he looked up to her with that still shocked expression. "E-Eh? What's up Emilia-tan? Asking a question out of nowhere..." He tried to keep his voice somewhat steady, and it was barely on the edge.

Emilia brought up her hand and covered her mouth. A look of worry was painted across her face. "Well...nothing in particular. I was just wondering." She leaned in slightly, her eyes scanning her knight. "More importantly, are you alright, Subaru?" She asked curiously.

The knight was in fact, not alright. "Y-Yeah, just a bit surprised is all." Yet his thoughts ran back to the past. "Now that I think about it, Emilia-tan did used to think that kissing made babies." Then, two other people flashed across his mind. "But I'm pretty sure I asked both Ram and Frederica to properly explain it to her. Did they not???" He thought bitterly. There was no way he was going to explain the embarrassing process of child procreation. Not to his innocent and beautiful liege. 

With a pained look that scream anxiousness, Subaru's eyes met the half-elf once more. "Err...uh, didn't both Ram and Frederica explain it to you?" Please, tell me they did. He really, really, really didn't want to be one who had to do it.

Emilia looked away, placing her hand on top of her chest. "Well, yes. They told me, but...I'm still unsure about what sex is." Another choice of words than rammed into Subaru's skull. 

So much so he spat even more tea out - even though he hadn't even drunken any.

That worried looked was plastered on Emilia's face again. "See? Again? Are you sure you're alright, Subaru?" She had her hand over her mouth again, and her eyes were full of concern.

Subaru threw his hand up, signaling his wellbeing. "I'm alright, I'm alright. Just—the impact of hearing Emilia-tan say such unexpected things is too much." He wiped his mouth once more, noting how he would drink no more tea for the day.

Just then, a sudden, hot thought filled Subaru's head. It warmed up his cheek, turning them a strawberry red. "Maybe, I can...No, I shouldn't that would..." But wouldn't he be the one best suited for the job?

Glancing over at Emilia, he saw that when staring at him, her cheeks became red as well. Though not as much as his, still a beautiful blush. Silence washed over like a wave, before Subaru spoke. "Alright...would you like to try it yourself?" Subaru asked not so confidently.

"H-Huh?" Emilia resounded in confusion.

Subaru coughed into his fist, further showing just how unsure he was. "T-That sex thing." His cheeks could be compared to a furnace with how hot they were. Was he seriously doing this? 

Emilia was also unsure. "E-Eh? But, won't we make a baby if we do?" She queried with a panicked voice. It wasn't like she was saying no, and it also wasn't like she was denying his child, but it seemed just a bit too soon.

Pitching the bridge in between his eyes, Subaru stated with confidence. "L-Leave that part to me. I'll make sure to take care of that." Which, he would somehow need to figure out. "Just need to pull out. This world definitely doesn't have any protection so that's my only option..." Oh boy.

Turning just slightly ajar, he glanced at her with one of his scary eyes. "So...shall we try?" Just what the hell was he thinking?! He really shouldn't be doing this, yet, his soul just moves without a second thought! 

Hitting the thinker pose, Emilia thought long and hard about this action and its consequences. "But would it really be so bad if me and Subaru had a c-child?" Her face heated up slightly. "H-He did say he loves me and when I told him about the first time, he seemed like he would take responsibility..." With that said, she brought down her fist and made up her mind. "Ok! If you say so, Subaru, then I'll do it!" She exclaimed with bits of confidence. 

Sweat dripped down his head, but his heart was already steeled. Subaru grasped her hands before shouting. "Alright! Let's do it then!" 

...

"Normally, I could never ever dream of saying or asking something like this." Subaru thought as his body was swallowed by utter darkness. "Just the idea of Emilia-tan agreeing is already crazy enough, but now—I can say these things! Because it's a fanfic!"

Hitting a thankful/cool pose, Subaru quietly celebrated how well this would turn out for him. He'd get to lay bare with the one he loves. "Thank you! Fanfic author!"

Ay, no problem 👍

Though, the half-elf only looked at him like he was crazy for doing something so unexpected. "Subaru, what are you doing, silly?" She teased him slightly for looking so weird and standing on a table. 

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The scene change to a spare bedroom, because this a fanfic. 

Emilia now laid in her loose, sleeping attire. Her skin was smoother than any marble and her figure was near divine. Her hands laid just above her breast as she whispered softly. "Subaru..." Her amethyst eyes were glued to his own.

That red blush that heated the world itself never disappeared from Subaru's face. "What—What should I do?! I'm too inexperienced for this!" His mind was clouded with worry, but his memories resurfaced with what every lovers scene started with. "Okay, we'll start with this..." 

Lowering his body, Subaru's face was incredibly close to Emilia's, before they met in a gentle, yet passionate kiss. Slight moans could be heard from the half-elf as her knights' hands grazed just along the softness of her thighs.

Sitting to dive further into the kiss, their lips unfortunately parted at they both panted - as if they were craving air and each other. "I'm going to touch you in a ton of places, are you okay with that, Emilia-tan?" Subaru asked again. He didn't ever want to pressure anything onto his darling Emilia-tan.

Emilia nodded with excitement, almost as if she was accepting some sort of challenge. "Yes!" She nodded again. "I trust you, Subaru. So teach me." Her voice was at a drawing like between certain and anxious. No doubt she felt like this experience would be life changing - and possibly for the better.

Being met with her agreement, Subaru's eyes drifted to her breast like a magnet. Slowly, he brought his hand up to her sleep wear, before tugging it off gently. 

"Uh! Uhm..." Emilia was incredibly red now, with her ears being beet colored as she saw her own breast spill out of her clothing. And it was no better when she saw her knight admring her figure.

Subaru was no better. His brain was malfunctioning like an old crappy laptop as he witnessed Emilia's chest bounce. "E-Emilia-tans boobs...just take me to heaven!" Steam rose from out of his ears. What a geek. 

Before long, Subaru had come around and begun feeling and marveling at the warm, smooth flesh. How pillowly yet resilient it was, and how it seemed to overflow his hands as he continously kneaded them. Even lightly brushing against her hardening nipples sent shocks throughout the both of them.

The way his hands shifted, moving her generous flesh and cradling them so tentatively brought confusion to Emilia. It felt amazing in such a bizarre way that she simply couldn't comprehend it. All the while Subaru basked in the velvety feeling of her globes.

Eventually, the feeling was too overwhelming and too hot for the half-elf to deal with. "S-Subaru! This feels weird!" But weird in a good way. In a safe and comforting way. She wouldn't say all of that of course, but she couldn't deny that when her Subaru was touching her, it felt enlightening. 

Flustered, Subaru releases a bit of his grip. "This feeling is necessary part of sex, Emilia-tan!" Which wasn't exactly a lie. So Subaru said that in hopes to calm her and his own nerves. 

Dawning a doe face, Emilia looks at his wandering hands along her body. "Is...Is that so? Alright then..." She braces herself as she feels the warm feeling of her breast being fondled and molded by Subaru.

Emilia's face was redder than before, with moans escaping her lips unknownly. "I-If this feeling is good, then you don't need to hold back." His grip grew more firmer as his palms continued sinking into her mounds. 

"Mmh...Ah~!" Deciding to no longer fight against the feeling, Emilia allowed herself to fully enjoy the electric sparks that crossed along her body as her knight continued loving her breast.

Shutting her eyelids, Emilia threw her head back from all the pleasure she was receiving. Subaru found the perfect chance to dive in for the meal. Slowly, he brought down his lips to the tip of her nipples, before slowly nipping and worshipping them. 

Emilia's eyes shot open as she saw her knight drag his tongue all across her breast, bringing them closer to taste both at once. Her fist grabbed a handful of the covers as her silky skin began sparkling due to her knights love. "Ah~! S-Subaru~" She couldn't help but mutter in enthrallment.

Subaru was being as gentle as be possibly could be. Yet, there was no denying that all these actions had his gut twisting in a wonderful way. Was this reality? Was he dreaming? What an amazing dream it was if that was the case.

Flicking her nipples one last time, Subaru backed off just slightly to admire his work. How the light bounced and glistened off her pearly skin due to his saliva and love. It got him all the more excited. "Waah~ She looks so cute! E-M-T!" He couldn't help but mentally cheer, even as his heart bashed against his ribs.

Leaning in closer to each other, both of their chest heaved as they were near breathless. "Emilia-tan...are you ready for...?" He asked hintly. 

Emilia only gave a small nod. "Mhm...I am..." She whispered in a quiet tone. Not knowing what was about to come get her gave—a chill, but she trusted Subaru will her soul and body.

The half-elf laid down as Subaru's fingers treaded lightly up her legs. Until they met their destination. Surely, he begun to tug off the thin white panties that Emilia wore, bringing them down to her ankles before he looked as saw her smooth, bald pussy.

More steam just came out of Subaru's head like a steam train, and he was sure that his face was definitely more red. Probably to the point where some would think he would be sun burnt. "I-It's Emilia-tan's p-p-p-pu—!" Even his thoughts couldn't finish the naughty line.

The innocent half-elf only drank in the sight of how speechless and breathless her body made her knight. She couldn't deny that he looked so silly and cute when he was so flushed.

While the not so innocent knight was just dazed by seeing Emilia's bare, wet sex. Along with her exposed, milky top. Wanting to not hold on much longer, Subaru's hand immediately traveled in between her legs. "I'm going to touch you now, Emilia-tan." And his fingers slid on top of her inverted lips.

A gasp cut through Emilia's throat as a moan mixed in with her voice. "Ah–! Wait, Subaru!" But the effect had already taken place. It was just a sudden infiltration that she felt in her lower place. It was her beloved knights fingers entering in her without a shadow of a doubt. "Auuu~ Hm~!" Her voice made noises without her knowing. Sounds she couldn't control.

"It went in! Fanfics are amazing!" Subaru thought happily as his fingers explored her warm, wet insides. Albeit, he had no clue what he was doing, but he remembered reading somewhere that moving his fingers around and touching this one spot—

"Ahh~!!!" Emilia moaned loudly as she felt her swollen clit be rubbed against. Her hands went and latched onto the jacket of her knight, attempting to ground herself in all this overloading pleasure. "Ah—Ah! S-Subaru, it feels weird..." Yet her voice conveyed one silent message: To keep going.

Anyone could see how hard Emilia was trying, to not lose herself in such pleasure, to not let her moans and cries spill freely from her rosy lips. But it was simply too much, too much for her inexperienced brain to comprehend and deal with. "Ahn~! Nhuugh~♡" She loved it. She couldn't no longer lie to herself and say she didn't.

The feeling, the warmth, the closeness, the person. This wasn't even sex. She knew that this was merely the stepping stone, and already she loved it. No, she loved it because of who she was with, because her knight tentatively held onto her and showered her in his love.

It was so dirty and naughty. That place down there was a dirty place, wasn't it? Yet whenever she felt Subaru touch it like it was something precious, something to behold and love, she didn't care if it was wrong or not, didn't care if she got pregnant or not, she just wanted more of her knight.

Slowly, that feeling exited her pussy and she felt empty inside. Subaru looked at his soaked fingers. "She's already...this wet?" It was a sweet surprise to say nonetheless. That his 'charms' and work managed to get her just as excited as he was.

A weight of heat fell upon Subaru, so he stripped off his jacket and left his black t-shirt on. He looked at the mess in between Emilia's legs and decided that now would be as good as a time as ever. "Alright, Emilia, I'm going in..."

His voice shook as he unbuckled his pants, freeing his large, thick erection. Swear droplets fell from both of their faces. "O-Once I put this inside of your, we'll be having s-sex." He said nervously. He was confident in his size, but that doesn't take away the embarrassment.

Being met with the large rod of flesh, one would say that Emilia was both astonished and concerned. She carefully parted her pussy, as she wondered out loud. "W-Will it really...fit?" 

Seeing Emilia's display herself so lewdly, something struck Subaru in his very Od. "Emilia!" No longer was his shackled by his thoughts and worries, only his instinct reined. Swiftly, his plunged himself into Emilia's wet entrance, but not too harshly. "Agh–!" He was in, he was really in. 

The sudden sensation of being stretched so violently and so full rammed into Emilia's skull. "HYAH~!" Her voive cracked as her nails dug deep into Subaru's shoulder, but it did nothing to ground her against the mind numbing experience. "Amazing! It's really in!" Her told held surprise and shock all in one. Tears pricked her eyes as her body did its best to adjust to the solid flesh in her stomach.

Subaru was the same, as he held onto Emilia's thighs. He could feel his cock being greedily swallowed by her tightness, wanting to be held there forever. "I'm in! I'm really, actually in! I'm inside Emilia-tan!" It felt so unreal, so warm and soft. No amounts of imagination could compare. 

Looking up to her knight, she had that look of amazement still plastered across her features. "Wh-what's next?"

That snapped the boy out of his loving haze. "Huh?! Oh, uhm, right! I'll begin to move." Just has he was about to begun thrusting his hips, two hands planted firmly on his chest.

Emilia held his gaze with her own. "B-Be gentle." She said softly. She knew she would be 'wrecked like a train' if her knight just went all out on their first time. She wasn't strong enough to deal with that. She knew.

But she also knew that Subaru would probably be gentle anyway. It was his first time as well, right? So there's no doubt that he wouldn't know what to do either, yet, both of their instincts led them here. Led them together. 

Subaru nodded. "I-I will. I promise." That made Emilia crack a little smile. Promises were just as important to her like how water was important to the body. 

The half-elf laid completely flat on her back, before Subaru offered his hands. She held them tightly as she stared deep into his eyes. "Here I go–!" His hips moved slowly and gently. The thickness of his large shaft scraped along the wetness of her walls, sending signals of pleasure throughout them both.

Emilia cried in ecstasy as her back ached upward. Her breasts spilled to the side of her body as she released one hand to grab onto the covers. "Ahn~! Ahh! Subaru~♡! Ahn!" She exclaimed his name as her lower body was ravaged by the length of her knight.

Droll was flowing out of her mouth like an uncontrollable droplet of water. She tried looking at him, trying focusing on his beautiful, scary features, but her mind was a haze. "M-My head is getting so—so fuzzy~" She was breathless now, no longer trying to fight against the pleasure, but rather, letting herself be lost in it.

The sounds of loving flesh in flesh resounded throughout the room, painting for the entire manor to hear of their entanglement of truest love. "M-Mine too! I love you, I love you! Emilia-tan!" He said as the pacing grew more needy. Though Emilia didn't complain about the increase in velocity. 

Subaru had leaned down, intertwining his fingers with Emilia as he capture her lips in a battle of tongues. She welcomed him wholeheartedly and even brought her hand to his neck. 

Her moans were now being swallowed by his mouth while his grunts were being swallowed by hers. Together they gluttonously devoured each part of each other in a gentle yet passionate way of intimacy. 

Tongues melding together as whimpers could he heard from both parties. Her hand only grew more needy as her pussy begun to start squeezing him even more - wanting, needing to be filled. His hand only held onto her own, as his other fingers begun tracing around her hardened nipple, teasing and ravashing around with the substantial flesh.

Climaxes were building to an all time high, with Emilia about to having the most mind pleasuring organism she's ever experienced. Subaru was lost in his thrust, but as he felt his load ready to burst he tried pulling out. "Eek! No!" Emilia yelled desperately, before her legs locked him in. 

Fear was painted across his face as Subaru realized his was stuck. "Wait—Emilia, no! No—No~!..." But it was too late. The hot spurt had already begun leaking out and traveling deep into her wet and shivering sex.

Subaru almost fell onto Emilia, but caught himself with one arm. His face was red and wet while his heart was beating like a mad man. "F-Fuck..." He cursed with little regret. He couldn't lie and say that giving her a cream pie wasn't amazing. Who would say that?

Panting heavily, Subaru places his head against the bed. "I-I...I didn't do it. This is why...you don't rely on pulling out..." He had now learned the painful truth as to why men never, ever relied on such a stupid technique. 

Subaru tried to get back up, but Emilia held him there. "E-Emilia?" He asked wordiedly. Was she mad because he didn't pull out? Was he gonna lose his knightly position? Worries spreaded like wildfires in his mind.

But, Emilia only held him close, and softly. "That was amazing, Subaru. I-I think I messed up by holding you there..." She whispered her sin—which she also had no regret for. She allowed Subaru to get back up and stared into his eyes. "I-If we do have a baby, will you take responsibility?" She questioned with a lump in her throat.

Subaru nodded frantically. "Of course! I would never even think of abandoning you or our child." And those words held the trust like a lake holding its water. Subaru was just that amazing of a guy to never ever forsake his love.

Emilia smiled softly as she felt the warm essence of Subaru in her stomach. "That's good then. I think we'll be reeeally great parents." She said happily. Truth be told once more, she wouldn't mind baring her knights child. 

"Y-Yeah, I think we would be..."

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After all was said and done, Subaru sat down and held his red face. "I did it. I actually had sex with Emilia-tan, and like an idiot, I also came inside her too! Gah! Just what kind of dummy am I?!" Subaru mentally berated himself for letting go and just cumming inside of his liege. 

"Subaru!" Emilia came sparking more than usual. She had went to clean up the mess they had made. She greeted him as her face shined brightly. "Sex is reeeally amazing it? Right, Subaru? We should do it again sometime!" She said with that same enthusiasm she first had. 

Rubbing the back his head, Subaru couldn't help but feel nervous. "Heh...It was no biggie." "GAH! SHE'S TOO SWEET! E-M-T!" Subaru, once again, fell head over heels for the half-elf.

Then, he felt something lean on his shoulder. "Continue teaching me more stuff, ok-ey?" Her face was still beaming happily as she enjoyed the warm both in her stomach and the one radiating from her knight. 

"W-Will do!" Subaru replied instantly. God he was going to somehow forget this day. Even though it was one of the best days of his entire life. 

And the half-elf and her knight lived happily ever after.

Well, not her knight but you get the point.

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Extra:

"Are you one hundred—no, one thousand percent, Beako?" Pacing around worriedly was a black haired knight who had sweat dripping down from his chin. He had asked the little spirit to repeat her words far too many times.

Beako sighed. "Betty will tell you for the final time, I suppose. Elves cannot get impregnated so easily, and this includes half-elves, meaning doing it one time does not mean Emilia is pregnant." She explained it so simply, like telling how a rock should be a rock.

"But are you sure? Like, really sure? What if she does?" Subaru responded with the same worries. It wasn't that he was afraid of being a father - he was - but also because Emilia bring pregnant could interfere with the Royal Selection. 

"The chances of that are far too low, I suppose. You'd need to do that at least a hundred more times before even considering that possibility. That's how low the chances are." Turning around page, she looked up at Subaru and latched onto his hand. "Stop worrying so much, in fact. It's not good for you." She said with a sympathetic smile.

Subaru looked down at Beatrice and suddenly gave her a hug, making the spirit drop her book. "Gah! I'm so blessed to have such a wonderful, lovely spirit!" He spun around with cletching the loli.

"Wah-! Put me down, I suppose! Subaru!" She yelled as the knights worries were finally soothed. Even if she did get pregnant, he wouldn't back down, but Beatrice said that she wouldn't. So he'll trust his spirit.

Subaru then went and spent the rest of the day with Emilia again, laughing and giggling while exploring the garden again and holding hands. Maybe they exchanged a few kisses, but that wasn't so bad, right?

Nothing could take away the peace Natsuki Subaru was experiencing, if anything, this was the greatest he was going to feel for awhile. Sure, being a knight comes with its own headaches, but he has friends and Emilia to help him through. That's enough—more than enough for him to stay alive.

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Stay Alive.

(This my favorite song and I just wanted to put it here.)

Notes:

Some may ask why I didn't add this to my 『Stories of the Half-elf and her Knight』fic, when the reasoning is quite simple.

The first chapter of that fic is when Subaru and Emilia first had sex, so adding this into there would make no sense since this fic is also them having sex for the first time. Ya get me? Plus, I just didn't wanna.

I'm gonna make a collection purely for all the EmiSuba stuff I'm gonna write though. Best believe that there will be many, many, MANY one-shots of them. Some will be fluff, some will be angst, but I'm sure I'll put all my smut into my other fic.

Oh, also, I won't just be writing EmiSuba or TellaSuba. I'm write about other ships that may or may not be popular or what not. Like Julius/Anastasia or Felix/Crusch etc, etc. No Felt/Reinhard through. That's weird.

Do give criticism where it is due, and let me know if there are any mistakes that need fixing up. Other than that, thank you for reading!

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