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All You Need is a Beta

Summary:

Lily's heat is coming up, and Haewon, a beta, who has spent her whole life not knowing much about such things, has to learn how to help an omega for the first time.

Things get out of hand, but everything works out in the end.

Notes:

Continuation of Not Every Omega Needs an Alpha, but works as a stand-alone

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

Work Text:

Since Lily had finally decided to take matters into her own hands and seduced Haewon, the Beta’s life had been quite difficult.

Don't get her wrong, Haewon was overjoyed.

She was finally dating Lily, something she has been longing for since she met the Omega, she was also now aware that it was possible for a beta to actually have a love life (leave her alone, it's better late than never), and she has also had sex with Lily, which never failed to bring a goofy grin to her face each time she remembered it.

The difficult part had to do with the latter thing.

Apparently since the two of them had involved themselves intimately, suddenly everyone, besides Haewon, was able to simply smell Lily on her body (yeah don't ask her, it still sounds crazy), which was really awkward and extremely embarrassing for the Beta every time someone brought it up.

The first day after the night with the Omega, Jinsol had pat Haewon on the back and congratulated her for finally ‘claiming’ the older girl. Haewon had been too embarrassed to tell her it was actually Lily claiming her and that she had been an unapologetic bottom.

She had actually not told anyone that little detail, and she was happy Lily was also keeping her mouth shut about it, since suddenly the alpha trainees had kind of adopted Haewon into their group because of her apparent alpha-like ways.

It's not like Haewon didn't have any friends before, she got along well with everyone in fact, but her only close friend had been Lily for a long time, and now suddenly it's almost as if she had always just been an alpha, which felt pretty validating, but also a bit too complicated for Haewon's liking.

Especially considering that in truth she hadn't been very alpha-like with Lily at all.

 

It had been a few days since that fateful night, and Haewon was getting a bit anxious.

First all of this alpha talk had gone straight to her head, but then she was quickly reminded of her actual secondary gender when her calendar had made her aware that Lily's heat could be starting any day now.

The two had forgotten to talk about the elephant in the room since they have been a bit busy in the past days, but now Haewon would really have to talk to Lily and ask her how to help her through her heat.

Haewon had kind of exaggerated every time she said she had listened in health class.

Yes, she knew the basics, but she never thought she would actually have to pay too much attention, since none of it would ever apply to her.

The classes about heats and the solutions to them were so embarrassing, Haewon spent more time on finding different ways to avert her eyes than on actually listening to the content.

Now, because of this, she was having a bit of a problem.

She thought about just looking up the answers, but when she tried once the first thing that showed up was a porn site, and she had slammed her laptop shut like lightning.

After that she decided she would just have to ask Lily, even if it might be a bit embarrassing.

 

It was on the evening of the fourth day since they had become a couple, when the two of them decided to have THAT conversation.

They were sitting on Lily's bed again, legs crossed and their knees comfortably pressed against each other.

First the silence had been pleasant, but it had quickly turned awkward as they remembered why they were here.

Haewon cleared her throat and tried to fight down the blush rising to her cheeks. They haven't even started the conversation yet for goodness sake.

“So…” she dragged out the word comically, and then smiled in triumph when she heard Lily giggle.

“Alright, we know why we're here,” Lily continued for her, and nudged Haewon's thigh with her knee.

“Yeah…” Haewon scratched her neck, “because I'm clueless,” she shrugged with a smile.

“No,” Lily rolled her eyes and smirked, “You're just not prepared enough, but I took matters into my own hands,” she added.

“Yeah, I remember,” Haewon blushed quickly. She could never forget how Lily had taken control of her that night.

“That's not what I'm talking about,” Lily giggled, “though I'm still very proud,” she threw a grin towards Haewon as she got up from the bed.

The younger girl stared at her puzzled as Lily made her way towards the closet on the other side of the room, and started rummaging through the things piled up inside.

“What I mean is that I prepared a bit for when my heat would come this time,” she explained proudly.

It didn't take long for her to find what she was looking for, that being a small, but long cardboard box, the top of which was ripped open quite haphazardly.

Haewon watched as she placed the box down on the floor, and opened the broken lid.

Lily pulled out two things, the objects letting out a metallic rattle in her hands as she presented them towards the younger girl.

Haewon's mouth dropped open in shock at the sight.

In Lily's one hand was a black leather harness with metallic details, while in the other was a giant blue silicone dildo.

“That's… That's huge,” she croaked out, not able to react any other way for the moment.

Haewon wasn't actually sure what counted as big when it came to sex toys, it's not like she had anything to compare it to. On the other hand, when she compared it to Lily's body though, it really did seem huge.

“Yeah, it's ten inches,” Lily let out an embarrassed giggle, “I ordered it just after we- you know, and I paid extra for express delivery, I hope it was worth it,” she grinned.

Haewon gulped nervously.

“Don't worry it's not gonna be you taking it,” Lily laughed at her reaction.

“Well, can you take it?” Haewon blurted out in worry.

“I don't know,” Lily trailed off, embarrassed, “I haven't tried yet,” she averted her eyes with a blush.

So Jinsol was smaller than that, the side of Haewon's mouth pulled into a smirk.

She was suddenly hit with the satisfaction that she was bigger than the Alpha who had been taking care of Lily previously, before remembering the fact that the dildo was not actually attached to her.

She cleared her throat in embarrassment, as if Lily could hear her thoughts.

“So, I should use this… on you?” Haewon squealed out.

“Well, that's the idea,” Lily giggled and sat down on the bed again, next to Haewon.

“So are you gonna try it on?” She said when Haewon didn't react, sending the younger girl quickly scrambling off the bed.

“Uh yeah of course,” Haewon said with a chuckle. This whole situation was so bizarre, but she couldn't say she wasn't at least a bit excited.

The harness was kind of complicated to get on at first, the two of them working together to figure out the rotation of it, before Haewon was finally able to pull it up over her shorts (she was not about to undress just for this, that would have been a bit too much for now.)

When it was finally on the girl, Lily inserted the dildo into place, and Haewon quickly pulled the thing tighter so it would stay where it should.

For a few moments the two of them just stayed like that, Lily sitting on the bed, and Haewon standing in front of her with the harness on, staring at the dildo between the Beta’s legs, before bursting into a fit of giggles in unison.

“Oh my god,” Lily said, burying her face in her hands to try and stop her laughter.

“Hey, come on! It was your idea,” Haewon let out between laughs, and with a blush rising to her face.

“No, no, I'm just finding it,” Lily looked back at Haewon with a pretend-serious expression, trying to keep a straight face.

“Does it take you that long to find?” Haewon asked back, quoting a meme, and earning a slap on her thigh from Lily.

“Okay okay, let's be serious,” Lily took in a breath and let it out in a deep sigh, “it's not actually that bad,” she shrugged.

“It's neon blue,” Haewon deadpanned.

“Would you rather it be flesh colored?” Lily asked with a shudder. Haewon had to agree, that would have been much goofier.

“Okay right, it's not that bad, but it's going to take some time getting used to,” she said, poking the thing with a finger.

Lily slapped her hand away, “well then better get used to it quick, my heat could be here any second,” she said, and moved to loosen the harness from Haewon's thighs.

“Hey, you just said I needed to get used to it,” Haewon protested.

“So you just wanna sit around with it on?” Lily mused with a grin.

Haewon let the harness fall around her legs to the floor, and climbed back into bed, tackling Lily with her.

Lily let out a squeak as the younger girl cuddled her down into the mattress, and then a set of giggles when Haewon nuzzled into her neck with her face.

“No, I guess not,” Haewon murmured into Lily's skin with a lazy smile.

It was already getting late, and now that she was a bit less anxious and felt a bit more prepared, she started to feel the heaviness in her eyelids.

Lily let out a satisfied sigh with a smile on her face. She settled into Haewon's hold more comfortably, pulling her blanket on top of the two of them.

They still had more to discuss, but they could talk tomorrow. For now they would just have a good night's sleep in each other's arms.

 

When Haewon woke it felt like she was still partially in a dream.

She could make out some things in the room as she tried to pry her eyes open, but everything was still hazy. It was dark and quiet outside, so she must've woken up from something in the middle of the night.

As she tried to blink the sleep out of her eyes she suddenly heard a small high pitched noise from her side.

Haewon tried to make out her surroundings slowly, but when she heard the sound again, louder this time, her eyes immediately snapped open. She finally realized what had woken her.

She pushed herself up to look at Lily next to her on the bed, who was a sweating and panting mess with obvious pain visible on her features.

Panic shot through Haewon immediately.

Lily's heat had never started in the middle of the night before. They had always had time to prepare, build a nest, and hang out before the Omega's pain got worse, but now suddenly everything fell on Haewon.

“Wonnie-” Lily let out a weak whine as she grasped Haewon's arm, and tried to pull herself up.

Haewon helped her sit up a bit against the headboard of the bed, but it didn't go far because another round of pain hit the older, and she let out a cry as she fell back.

“Tell me, how can I help?” Haewon asked while her hands moved frantically, caressing Lily's cheeks and brushing the wet hair out of her sweaty face.

“Just- I need you,” Lily whined as she pulled the Beta closer to herself aggressively, not sparing Haewon's shirt from her strong grasp.

“So hot,” she groaned when she pulled Haewon's body on top of hers, and suddenly Haewon understood.

Of course, she thought, as she helped Lily pull her shirt off, followed quickly by the rest of her clothes. Of course someone sweating that much would want a bit of cool air.

Haewon kicked herself on the inside. She has to lock in, she can't be acting this dumb when Lily needs her.

“You too,” Lily murmured with a weak grin as she pulled at Haewon's shirt. A blush spread on Haewon's skin as she helped the older girl take her own clothes off as well.

When they were both naked Lily let out a satisfied sigh as she pulled Haewon fully against her front. Her nails were digging into the Beta’s back, and she let out a groan in sync with Lily, when the older girl tightened her hold at another wave of pain.

Lily was panting into Haewon's ear, and when the younger girl's knee made its way between her legs she let out a loud needy moan.

Haewon flushed red as she felt Lily's slick on herself, and as the Omega started grinding against her, the seemingly unending wetness was spread all over her thigh.

“Need you inside,” Lily breathed into Haewon's ear between moans, sending the Beta into action.

Haewon reached down to the floor next to the bed, the maneuver a bit difficult since Lily was not letting her pull away even an inch from her body.

She patted around on the floor blindly with a single hand, before her fingers finally closed around the leathery material.

She pulled up the contraption to her side, and tried to back away from Lily who only graced her with a protestant whine.

“Lily, I have to pull away just for a moment, it won't be long, I promise,” she tried, but Lily just shook her head frantically against Haewon's cheek.

The younger girl let out a sigh. She would have to do this the hard way.

She tried to muster up all her strength and every serious bone she had in her body. She will apologize to Lily when this is over.

“I don't think you heard me, Omega,” she spoke into Lily's ear with a quiet, but commanding tone. She put her free hand on the girl's shoulder and pushed down with strength.

“Stay,” she growled when she was finally able to rise.

This time Lily just let out a pathetic moan under her, rather than trying to fight back. The sound sent a shiver through Haewon. She could get addicted to that.

The Beta pulled the harness onto her crotch as fast as she could in the awkward angle, and started fiddling with the straps as Lily's whines grew increasingly impatient.

She was so glad they left the dildo in the harness, because if she had to put that in with her shaking hands too, she would be in trouble. She was already struggling enough just trying to tighten the harness around her hips.

Suddenly, with strength Haewon didn't know the girl had, Lily grabbed onto her, and reversed their positions with one quick movement.

The air was knocked out of Haewon as she was thrown onto the mattress, and she let out an embarrassing wheeze.

As Lily straddled Haewon's hips, the younger girl's hands shot up to her hips automatically to help her steady herself.

Lily's hands might have been shaking even worse than Haewon's own as she took a hold of the strap she had been struggling with, and with one strong pull tightened the thing against the Beta’s hip.

Haewon let out a hiss of pain, the strap being much tighter than what she would have preferred, but she supposed she deserved it after how long she had struggled with it.

“Stupid puppy,” Lily panted into Haewon's ear as she leaned her front flush with Haewon once again, “you need me to do everything, don't you?” She teased with a smirk in her voice.

“No- I,” Haewon tried, but Lily grabbed her jaw, placing her palm onto the Beta’s mouth to cut her off.

“Just stay there and- ah, look pretty for me, hm? You can do that, right?” Lily let out a shaky moan, and brought her head up to make eye contact with Haewon.

Haewon could only stare at her with Lily's palm still over her mouth, and she could only watch as Lily rose to bring the dildo to her entrance.

The Omega used her free hand to take a hold of the toy and maneuver it towards her entrance, and by the time she managed to get the tip in her thighs were already shaking from the pain and from exertion as she was holding herself up.

Haewon held onto Lily's thighs to help her continue, and she let out a muffled whine in unison with Lily, when the older girl finally started lowering herself onto the dildo.

The slick flowing out of her entrance was already dripping down the side of the toy, and Haewon could barely take her eyes off the sight, the only thing convincing her to look away being the fact that she could look at Lily's face instead, as the older girl was trying to take all of the toy in her.

Lily was panting without end, and she couldn't keep her moans in as the dildo was slowly filling her up.

She only took her hand away from Haewon's mouth when she finally sat down fully, and she had to catch herself when she fell forward with a cry.

Their faces were so close now, their noses almost touching, and Lily was breathing into Haewon's open mouth.

Haewon didn't think she deserved to be self indulgent, but she wasn't really thinking at all when she pulled Lily down into a sloppy open mouthed kiss.

Lily moaned into her mouth, and Haewon let her tongue enter and explore.

As the two made out Lily started grinding her hips on the toy mindlessly, not yet fully used to the size, but her instincts making it impossible for her to stay still.

It didn't take long for the kiss to turn into a mess of Lily moaning into Haewon's mouth as she worked herself on the toy.

Haewon held her hips to help her move with more intent, and she started meeting Lily's actions with slight thrusts from below.

She must've been doing something right, because Lily's moans and choked whines grew in intensity, and her grinding soon turned into desperate humping.

“Mmmh so close!” Lily whined loudly into the pillow next to Haewon's head.

She had buried her face between the Beta’s neck and the sheets, partially because she was too weak to hold herself up, and also because she wanted to smell the younger girl's scent.

Haewon only answered her with even stronger thrusts, making sure that the Omega wouldn't get rest even for a moment as she worked towards her orgasm.

It didn't take long for Lily to finally come with a strangled cry, the pleasure hitting her in waves, and her slick flowing down, wetting the bed between Haewon's legs.

The Omega kept grinding on the toy as she worked through her high, and Haewon helped her through it with a few weak thrusts, making sure the older girl got the most out of it, but also completely wetting her own thighs with Lily's juices.

Once it was over Lily's body went limp on top of Haewon, the toy still inside her and the small tired breaths she let out tickling the Beta’s collarbones.

For a bit Haewon thought she had fallen asleep, before the older girl suddenly pushed herself up to be face to face with her.

“I wanna go again,” She breathed out and pushed herself up into a sitting position, steadying herself with her palms on Haewon's abs.

Haewon grabbed her thighs again, and looked up at the older girl in shock.

Lily tried to lift herself slightly, but her thighs immediately started to shake, and she fell back on the toy, ripping a moan out of her throat as it hit her deep inside.

Instead, she started grinding her hips frantically on the toy to try to pleasure herself, but it was not enough, causing her to whine in frustration as she tried harder and faster.

“Lily- Lily!” Haewon tried, but the Omega wasn't listening to her, “You're too weak, you need to rest.”

“Don't try to tell me what to do!” Lily fired back breathlessly, obviously frustrated that she couldn't get what the omega in her was craving.

Haewon could finally see how pathetic she herself must've looked the first time the two of them had sex. She let out a chuckle at Lily's frustration. She owed it to her to give her what she wanted, not just because of her heat, but also for last time.

With one swift movement Haewon picked the Omega up, and pushed her down onto the bed.

The toy was still inside her, and Lily let out a loud moan, arching her back when the new position caused it to go deeper than ever before.

Her legs wrapped around Haewon's back, and her arms quickly followed.

“Fuck me Haewon, I need you so bad!” She whined as her hands pulled harshly on the younger girl's hair.

Haewon groaned in pain as she started moving inside Lily.

First just slowly as she got used to the angle and the movement, and then speeding up when she got the hang of it.

Lily turned into a moaning mess quickly, cutting her own whines off with loud moans each time Haewon hit a particularly good spot.

Haewon picked what she thought was a fast, but steady rhythm, but it didn't take long for Lily to get frustrated.

“Faster, puppy, are you even trying?” She moaned into Haewon's ear, before biting her earlobe.

Haewon just answered her with a growl as she sped up, her thrusts turning stronger and deeper to try and shut the Omega up.

Lily threw her head back into a loud moan at the change of pace, her back arching off the bed.

Haewon couldn't resist taking a nipple into her mouth, the angle awkward, but Lily's reactions so worth it.

She continued with this pace, but her muscles were starting to burn from the effort. Sweat was dripping down Haewon's back, and her hair was sticking to her face, her skin matching Lily's wetness. She would not give up though, no matter what.

Her tired gasping grew almost animalistic as her open mouth rested on Lily's skin.

She left occasional kisses and hickeys before she had to take deep breaths.

When she made her way to Lily's neck the Omega let out a whimper and pushed her neck closer to her face.

“Mark me, Wonnie, show everyone I'm yours,” she whined as she pulled Haewon's head closer, “claim me already!” She moaned, her throat sounding sore from fatigue.

Haewon knew she couldn't actually mark Lily like that, she wasn't an alpha, but the thought that Lily would want her as her mate was enough to cloud her mind with pride.

She bit down on Lily's neck, softly as to not hurt her, but the older girl's omega wasn't satisfied.

“Do it like you mean it!” She screamed as she gripped Haewon's hair to the point of pain, and Haewon could only oblige.

She bit into the skin harshly, a hint of the iron-y taste of blood entering her mouth.

Lily rewarded her with a long, loud moan, and a series of incomprehensible blabbers.

“Yes, yes, YES!” She finally screamed, and Haewon knew she was close.

“Fuck me harder, Beta! Give me your puppies!” She cried as she dug her nails into Haewon's back.

Haewon didn't have the rationale anymore to point out the oxymoron, instead just gritting her teeth with a groan to put every last bit of strength she had behind her thrusts, despite the pain.

It only took a few more seconds for Lily to come with a long throaty moan.

She continued whining and letting out breathy cries as Haewon slowed her thrusting, before pulling out completely when Lily finally came down from her high.

The older girl's head fell back onto the pillow, her arms and legs similarly next to her body, like a ragdoll.

Haewon ripped the harness off of herself as quickly as she could, before falling onto the bed next to Lily, their naked legs tangled together as she laid down partially on top of the older.

For a second she contemplated if she should pull a blanket on top of the two of them, but her mind was too foggy and her limbs too heavy to act on it.

Haewon's back and hip muscles were cramping badly, her arms seriously hurt from holding herself up, and she could barely think at the moment.

It only took a few more seconds for her to get lulled into sleep by Lily's soft, even breathing.

 

When Haewon woke, it was slowly and with a satisfied smile, surrounded by comfort and warmth.

She opened her eyes to see warm sunlight seeping through the blinds, her lidded eyes slow to adjust to her surroundings.

The next thing she noticed was gentle fingers moving through her hair lazyly, petting her head like a puppy's.

When she looked up she was met with Lily's warm smile, her face beautifully haloed by the sunlight and her dark hair messy around her.

“Good morning,” she said quietly, but her voice was sore, and Haewon couldn't keep her chuckle back at the sound. Lily might have to take a break from singing for a while.

“Not funny,” Lily said with a smile of her own, but pulled on a strand of Haewon's hair as revenge.

“Good morning to you too,” Haewon said finally, and tried to sit up to turn towards Lily more comfortably, but all she managed was a slight lift of her upper body, before she fell back with a hiss of pain. Damn her back hurt.

Lily let out a snort, Haewon immediately turning to glare at her. She will have to take a break from dancing for a while. It seemed they were even.

“How are you feeling?” Haewon asked Lily. She hoped the older girl wasn't disappointed with her.

Lily's mouth pulled into a smirk, “never better,” she said with a satisfied sigh, before her mouth turned into a frown.

“I should be the one asking you that,” she said, Haewon just stared back at her in confusion, “I was so mean to you the whole time, and then I just fell asleep before you even came!”

Oh so that's what she meant. Haewon let out a relieved chuckle.

“You don't have to worry about that, I'm fine, and besides, my back is killing me I would not have been able to take anything more,” she answered sheepishly, looking up at Lily with a goofy grin.

Lily looked back at her with a chuckle, and placed her hand back on the younger girl's head.

“I can make it up to you next time,” she said with a smirk.

Haewon's cheeks heated up and she looked away. If there was a 'next time’ that meant Lily was satisfied with her.

“Then I'll work on my back muscles for that,” she said with a smirk of her own, and cheered internally when she heard Lily choke on air.

They fell into comfortable silence once again, both still a bit tired from last night.

Haewon hadn't felt so happy and satisfied in a long time.

It had all been worth it, and now she could finally date Lily officially without any guilt or fear that she wasn't enough.

They could be together and be happy, without anyone telling them otherwise.

 

(And when the other trainees saw the mark on Lily's neck, she was too love-blind and too proud to feel any bit of embarrassment.)

Notes:

Edit: I fell asleep after posting this and when I woke up I thought it was all a dream help 😭