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Twins: Knives × Reader × Vash

Summary:

Vash wants to let you stay with him and his older brother. But what happens to the twins when they are around a fertile woman for a long period of time? They are strong, but your advances may prove it difficult for them to resist.

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“V-Vash. Are you sure it’s okay?”

Vash smiles as he looks back at me as I hide behind him.

“I’m here with you. There's no need to worry. Just let me talk to him. Things are different now.”

I nod and keep close. We reach our destination. We head inside, and I can hear faint piano playing. I was nervous, but Vash kept reassuring me as we got closer.
Vash opens the door, and the piano playing immediately stops. The man turns around, and I hid behind Vash, gripping his jacket. The man lets out a deep sigh.

“Why is there a human with you?”

“…She’s special, Nai.”

I hear footsteps, and then they stop in front of us. I hear him chuckle.

“Look at me, human.”

Vash defends, “She has a name.”

“When I require to know it, I will ask. Now human.”

I look at him, and my eyes widen. He didn’t look like his brother… but they did share similarities. His eyes are cold, but I could tell that he hid warmth behind them. His brows furrow, and he looks to Vash.

“So why exactly do you want a human to stay here?”

“W-We have been friends for a while… and her home was destroyed. I thought… since you don’t plan on hurting humans anymore. I was hoping that you would allow her to stay. She’ll stay out of your way, she cooks, cleans, and she thinks highly of us Plants.”

He looks back my way, “Vash thinks highly of you… I trust that you will uphold his words?”

“I-I will do my best, Sir.”

I tried to stay out of Knives’s way, while Vash seemed to make sure that we would always cross paths. Vash pulls me to where the piano was. He sits and pats next to him.

“We haven’t played together for a while.”

I nod, taking a seat, “It has been a while, hasn’t it?”

He grins, and we start to play. He always had more cheerful tunes to play. His uplifting spirit was infectious. After we play, he rests his head on my shoulder.

“I’m glad you’re here with us… if anything happened to you out there…”

I turn, pulling him into a hug, “I appreciate what you’ve done for me. You risked a lot…I owe you my life.”

He pulls back, “You’ve saved my butt on many occasions.”

I lean over, making it obvious that I looked at his behind. I shoot him a wink.

“Well, it was a butt worth saving.”

He chuckles with a light blush. We leave the room and I start dinner. Vash was excited, and then Knives started to walk away. Vash runs over and starts to pull him.

“Her cooking is amazing. I know you don’t NEED to eat, but c’mon. Just try it.”

He sighs but takes a seat. Once I finish cooking, I give them their food. As I sit Vash’s plate down, he takes my hand and kisses it before smiling.

“Thanks for the food, [F/N]. I appreciate what you do.”

I blush a deep shade of red, “…Vash. It's my pleasure.”

Once I sit, they start to eat. We eat quietly, and once we are nearly finished, Knives speaks.

“Human, you can cook, clean, you seem to be attractive enough… Normally humans like you are married with children.”

Vash chuckles, “She…She isn’t fond of humans. That’s why she’s been following me for so long.”

Knives’ eyes widen slightly, “Interesting… a human who hates their own kind. But I have another question…why does my brother speak for you so often?”

Vash was going to answer, but Knives gave him a look before he looked back to me.

“I usually like to observe and get to know others before I approach them. I don’t mean to upset you, Sir.”

“What was your name?”

“[F/N]…[Full Name].”

“So you have a disgust for humans?”

“More like a distrust for them. Most of them only do things that benefit themselves.”

He nods and then gets up to leave. Once he leaves, Vash lets out a sigh.

“Good.”

I look over, “What?”

“He likes you. I’m relieved.”

“It… It didn’t seem that way.”

“Trust me.”

“Okay, Vash.”

I clean up, and Vash shows me where I’ll be staying. It was very nice, and Vash seemed happy with my reaction.

 

Knives POV

As Vash walked towards his room, I came out of mine.

“Be careful.”

Vash sighs, “I know… The same goes for you.”

My eye twitched, and I glared at him, “You knew what it meant to bring her here.”

“I can handle it… can you?”

I furrow my brows, “Just be careful.”

I go to my room and do more research. After a few weeks, I noticed that [F/N] was too attentive to our needs. Her appearance looked happy enough, but her eyes were sad.
I've noticed that some days, she just stands by the piano. I saw her play joyful tunes with Vash… maybe she wanted something different.
Later in the day, I noticed that she was at the piano again. As I walk in, she retreats.

“Sorry, I’ll leave you to play.”

I put my hand out, stopping her. “Sit.”

She seemed nervous, but she didn’t protest. I sit and begin to play. It was a sorrowful tune. Her hands were hesitant, but she joined in. She was skilled for a human. Her playing added depth to the sorrow.
After the playing stopped, I looked at her. My eyes widen slightly to see her crying. I reach, to touch her shoulder when she suddenly turns and hugs me. It caught me off guard.

“Thank you, Knives. I needed this. I’m sorry. Vash is always so happy towards me, always trying to cheer me up…but I needed to cry. Thank you.”

She pulls away and starts wiping her tears. I stop her, placing my hand on her cheek, wiping her tears.

“Why we're you sad?”

“I left everything behind. I don’t miss the way I was treated… but it was my entire life that I left.”

I wipe her forming tears, “It’s okay to feel sad. Vash is the type to try and keep the room happy… if you need to cry… you can come to me.”

Her eyes widen, and her cheeks redden.

“Are you sure? You’re always so busy. I don’t want to impose on you, Knives.”

“[F/N]… You live here too. You can also call me Nai if you wish.”

She hugs me again. It was nice. I need to make sure that this doesn’t happen often. I already scolded Vash on this… I need to set a good example as well.

 

[F/N] POV

It has been a year or so since I was allowed to live here. Knives enjoyed it when things were quiet. He would often send Vash away on errands and just relax in the kitchen.
Today was one of those days, and Vash runs up.

“[F/N], do you need anything in town? Nai is sending me off again.”

“Umm. I don’t think so. Thanks for asking.”

His smile was soft… I wasn’t sure why he was so happy. He usually was pouty when he would run errands. Then his eyes began to wander my body, and I noticed that he’s been doing that an awful lot lately… and hugging me every chance he got.

“You okay, Vash?”

He hugs me very closely, “You’re so good to me. I’m just really happy.”

His head tucks in my neck, “You smell nice, [F/N].”

My cheeks redden, and then I heard a menacing voice.

“What are you doing, Vash?”

Vash quickly pulls away, “Ahh. Nothing. I was just getting ready to head out… see you later, [F/N].”

He heads out, and Knives looked confused and a bit angry.

“Has he… done anything like that before?”

“Yeah. He’s been really physical lately. Is he okay?”

He seemed bothered, “I’ll have to talk with him when he gets back.”

When Vash got back, Knives immediately pulled him aside while I put away what he got.

 

Knives POV

“What are you doing?”

“Nothing?”

“I saw what you were doing with [F/N]. Control yourself.”

Vash sighs, “I’m trying, Nai. Is it getting hard for you, too?”

I walk up, patting his shoulder, “I know it's difficult… just stay in your room for a while if things get worse.”

“Is that why you always stay away from her?”

“…Just listen to me.”

“Okay.”

 

[F/N] POV

I started dinner when they came back in. They both seem bothered. I decided not to pry and just continue to cook. They were both quiet, which was normal for Knives… but not for Vash.
I put the food on the table and started eating. It was still quiet. I decided to bring up a conversation.

“So Vash. Run into any problems in town?”

He stares at his food, “No… The food is good [F/N]… as always.”

I look at Knives, and he avoids my gaze as well. My brows furrow at the awkwardness. After what felt like forever, I picked up the dirty dishes and started cleaning up. I’m pretty sure that they left as I continued to wash dishes.
I felt a presence, but before I turned, arms wrapped around me, and their chin rested on my shoulder. I look down to see Vash's prosthetic.

“Thanks for the food.”

“V-Vash. What are you-“

His hands glide inside my shirt, groping my breasts. I let out a slight moan, and he thrusts his hips forward.

“You’re so cute. I can hardly contain myself. You like me, right? Is this okay?”

His hips continue to thrust and grind against me. I didn’t know what to do or say. Of course, I liked him… but I’d grown very fond of Knives as well. I grip the sink.

“You like this, right? Please… I want to be inside you so bad. I know Nai said to control myself…but he’s stronger than I am.”

“V-Vash.”

He moans in my ear, “Mmm… Say it again.”

He grips my hips and thrusts faster, his body hunches over me,

“You’re so soft [F/N].”

I turn, and my eyes widen as I see Knives right next to Vash. He pulls him off me. Vash’s face was red, sweat lining his temple. Knives looked embarrassed as well. He looks to Vash.

“Did you not hear a word I said?”

Vash pouts, “I can’t help it. [F/N] is so pretty… and so soft.”

Knives let him go and walk close to me.

“Sorry, we get like this sometimes. I guess, even at our age, it’s difficult to control it sometimes.”

“Control it?”

“I’ll spare you too many details… it’s a Plant thing… and you are a fertile woman… a beautiful… fertile… woman.”

He got even closer, and I could see the sweat on his temple. His breath became heavy, but then he cleared his throat, stepping away to try and compose himself.

“So… you are like this for just any fertile woman?”

Knives brows furrow in disgust, “Of course not. We have to be around them for quite some time. We start to recognize your scent, the way you walk, and talk. We can tell differences in your mood. Our kind then becomes nearly obsessed.”

I look at Vash, “Nearly?”

Vash pouts, “Sorry.”

I look at them both, and Knives takes a step forward. He takes my chin, pulling it up to look at him. He leans close, his breath shaking.

“Nai?”

He kisses me softly, and he exhales strongly through his nose as he wraps an arm around me while his other hand slides in my hair, causing me to shiver since his hands are cold. He pulled me closer, his tongue slides past my teeth, and it was very warm.
He grabs my leg, lifts it slightly, and presses himself onto me. With his skin suit, he basically wore nothing. He was hard and began grinding roughly into my clothed core. I break the kiss, moaning a bit loud, and cover my mouth.
Nai groans and thrusts faster, the same as what Vash was doing before. I felt a tug at my shoulder, and it was Vash with his puppy dog eyes.

“[F/N]… Please.”

I nod and move to where he grips my hips again, grinding against me before thrusting fast again. I turned to kiss Vash, and his kisses were sloppy and desperate. As I turned, Knives took the opportunity to suck on the right side of my neck.
Their thrusts hit with perfect friction. I couldn’t think straight with these two. Were they always like this… How did they hide it so well? I looked at Knives, and his flushed face was just mesmerizing.

“N-Nai… Vash… I don’t know if I can take much longer.”

Vash whimpers, “Me either. Ngh, I need you. I want more.”

Knives kissed me, his eyes were intense.

“I can’t wait to put babies inside you.”

My eyes widen, and Vash joins in, “Me too. I want to pump…ngh ah everything inside you."”

I shiver and hold onto Knives as I reach my peak. Knives bites down on my right shoulder while Vash bites the left. Their movements were desperate until they were still for a moment, then grinding against me slowly. Our breaths were all ragged, I’m still shivering and holding onto Knives.

“Th-That was… a lot you two…”

Knives lets me go, and Vash backs up as well. Knives takes my hands, and he looked very troubled.

“Sorry. We… We lost control. I promise to do better.”

He grabs Vash by the collar of his jacket,

“WE…will make sure that it won’t happen again. Right Vash?”

Vash pouts, “Okay, Nai.”

The next few days, I started to notice more little things about their routine. The thing that I noticed the most was that they stared… a lot. It was difficult for me to do anything without feeling eyes on me.
When I would catch them, Vash always had a cheeky grin while Knives would just avert his gaze. After a few weeks, I became more curious and a bit more excited at the thought of them.
The both of them pretended as if nothing had happened. I felt selfish that I wanted more. I sigh in frustration as I go back to my room, thinking about what happened in the kitchen.
They said that they had heightened senses. I had a plan. I shower before laying on the bed. As I relaxed, in my nude form, my mind began to wander again. I began edging myself. It was frustrating, but it was a part of my plan.
My lower half was a mess. I get up, putting on thin, tight-fitting leggings with no underwear. I put on a normal night shirt before going back to start dinner. A bit later, Knives comes in.

I look over my shoulder, “Hey, Nai. Dinner shouldn’t be much longer.”

His cheeks were very red, he walks a bit closer but stopped. I turn around, walking towards him. I reach my hand out, touching his cheek.

“You okay, Nai?”

He turns his head towards my hand, then takes my fingers in his mouth, the same fingers I used on myself not long ago. He closes his eyes, shudders, then moans softly.
He opens his eyes, and his eyes are filled with want as he grabs my hand to suck on my fingers harder. He pulls away.

“Why are you doing this?”

I play innocent, “Doing what, Nai?”

He groans but walks away once he hears the door open. I finished up dinner, and once Vash entered the room, he seemed bothered. They both sit at the table, their cheeks red as tomatoes.
I sit their plates down, and they pick at their food as I eat. They were quiet as well. I touch Vash’s hand, making him jump.

“You guys okay? You haven’t touched your food. You guys aren’t getting sick, are you?”

I get up to check his temperature, but Vash gets up quickly.

“I-I think I’m okay tonight. I’m not hungry.”

Knives get up as well, “I’m not hungry either. Sorry [F/N].”

I give a look of fake disappointment, “Oh… okay. I’ll try to make a better supper tomorrow.”

Vash defends, “It’s good… it’s always good. Don’t be upset.”

“Well, I hope you two get to feeling better.”

Vash pouted a bit before they left…now was phase two. They probably went to their rooms, but they were bound to come out sooner or later. I go to the couch, undress, then lay on my back.
I let one leg dangle towards the floor as I slid two fingers inside me. I moan slightly and get more comfortable.

“V-Vashuuu… Nai… ngh ah mmm.”

I curl my fingers and shiver, and my moan was a bit louder and strained. I open my eyes to see Knives, standing on the other side of the couch, his hand gripping himself through his skin suit. I look at his clothes.

“…Nai.”

His eyes were half-lidded as he nods, taking off his skin suit. His suit already didn’t leave much to the imagination, but he was still beautiful to gaze upon. He walks around the couch and gets on his knees, leaning in close to me.

“[F/N]…are you sure-“

I touch his chest, stopping him from speaking. I lean in, kissing his chin. He moves my hand away and pulls my legs towards him. He places my legs over his shoulders, and I wrap my legs around his head. His cheeks are now wet even before he presses his mouth against my core.
My eyes closed as I moaned out his name and gripped his hair. He groans into my wanting heat as he begins pumping himself.

“N-Nai…was Vash…ngh…is Vash gonna come out here?”

I look over to see Vash, his elbow on the couch, and his cheek resting on his palm. He had the cutest smile.

“I’m already out here, So you WERE teasing us? So naughty, [F/N].”

He leans down and nudges Knives, “Hey… Nai, I want a turn?”

Knives groans but pulls away. Vash discards his clothes before hopping over the couch. He places himself in the 69 positions, I pat his cute butt and he chuckles.

“That’s not exactly what I wanted you to play with, [F/N].”

I lick the tip and then glide my tongue along his shaft. His hips buck slightly, and I grip his hips, pulling him closer as I take him in my mouth. He lets out a whine, and Knives chuckles.

“I thought you said you wanted a turn, Vash?”

“Sh-Shut ahh.”

“C’mon Vash… Remember what you told me… What exactly did you say, Vash?”

Vash was drooling on my stomach and started to thrust into my mouth.

“S-Stop, Nai… I can’t. [F/N] is ahh.”

“Didn’t you say that you were gonna destroy her cute, little pussy… That she would scream your name and beg you to fill her with your cum… isn’t that what you said, little brother? But look at you…a drooling pathetic mess.”

I pull back, giving Vash a break. Once he catches his breath, he goes between my legs. I grind into him and start kissing and sucking on his inner thigh.

I moan, “Nai… don’t be so mean to Vash. It’s nice when he moans. I’m sure you sound good when you moan, too.”

I hear him chuff, “I’ll only do it if you want me to.”

My heart races, “Vashuuu. I’m gonna.”

He pulls back sucking and biting my inner thighs.

“You wanna cum? Just say it… C’mon [F/N]?”

I whimper as he bruises my thighs,

“Vashuuu… please. I wanna cum so bad. Vash.”

I hear him chuckle, “See Nai, she wants me to make her cum.”

I hear him grumble, “Then do it already. I would have made her cum three times by now.”

Now I hear Vash grumble but he leans down and starts again. I try to wrap my legs around him but he holds my legs down. Nai sighs.

“Let her do it, Vash.”

Vash pulls back for a second, “Don’t tell me what to do.”

He goes back and wraps my legs around his head. I thrust against his mouth.

“VASH…please don’t stop.”

I reach my peak and he doesn’t stop, even when my legs were shaking. Once he stops he moaned as he kisses my thighs. He moves off of me, his face red and soaked. His hair was disheveled and it made me chuckle. He was breathing heavily but leaned over, kissing me.

“Trying to send me to an early grave, [F/N]?”

“Sorry, Vash.”

He grins as he licks his lips, “It would be a good death.”

Knives nudge him away, “I’ve shared enough.”

He brings me to my feet and as he sits, he pulls me on his lap. His gaze was soft as he lightly touches my face.

“I’ll wait till you’re ready, [F/N]. I’m not impatient.”

He kisses me softly, bringing me closer as the kiss got deeper.

“You’re so beautiful. I want to give you everything.”

I hear Vash, “Hey, you know I’m not good with words.”

Knives groans into our kiss, “Watch and learn then.”

I look at Knives and touch his chest, “Please Nai… Don’t be mean.”

He chuckles, “He’s a visual learner. Trust me… He’ll catch up soon.”

I nod and look to Vash but Knives turns me back to him.

“It’s my turn. Don’t look at him… he’s learning now.”

I kiss him and look down to align myself, he holds me.

“You ready now?”

I nod quickly and he slowly inserts himself. I hold onto him as I moan against his neck. Knives let out a long exhale and a small moan at the end. I tighten around him and shiver.

“M-More of that Nai… please do more of that.”

“ngh I know. I’m trying.”

He thrusts carefully, his moans were quiet. I move with him and his hands grip my hips. His movements were perfectly angled once he got a rhythm. My hand traces his beauty mark and my eyes shined at his beauty. His eyes kept focusing and then un-focusing. His eyes roll back as his grip tightens at my hips.

“[F/N]… are you?”

I nod, “Yeah… I’m so close Nai.”

His knives come out of his back and he looked nervous.

“They are a part of me… I won’t hurt you.”

“I-I know.”

The knives wrap around me, bringing me closer to him, knives also rub against my cheek carefully. I nuzzle against them as I look back to Knives. His eyes were soft and glossy. He tucks his head in my neck as his thrusts continue.

“I love you, [F/N]…So much. You have no idea. You’re everything to me. I would die without you.”

I begin to cry as I hold him, “I love you too, Nai.”

My body began to shake as he held onto me. I reach my climax and Knives did a few thrusts later. Knives let out a loud moan as he kissed my chest. Once our breaths began to calm he carefully unraveled the knives.
He looks at me and smiles. That alone caused me to be worked up again. He feels me tighten around him and he has a look of pride before looking at Vash.

“She’s ready to go again, Vash. You wanna help her out?”

Vash nods quickly, helping me up while Knives moves over. Vash lays me on my back. His eyes looked very focused and determined. I touch his face.

“Vash… You don’t need to take what you saw Nai doing to heart. You’re Vash… not Nai.”

His eyes soften, “Sorry. I just want you to feel good.”

I chuckle as I pat his cheek, “Just you being here makes me feel good, Vash.”

His eyes widen for a second and then he nods. He starts kissing my neck as his hands massage my breasts. His prosthetic was cold but it felt nice. His fingers follow the curves of my body as his mouth latches on one of my breasts.

“It’s… ah. Vash.”

His hand goes lower and he inserts a couple of digits. I moan loud and hold his face closer to my chest. He moans against my chest.

“You’re tightening up so much. I’m so happy… you’re so soft.”

He sits up, pulling out his fingers and wiping them on the couch. He looks to Knives with a grin.

“I’m gonna make sure everything you pumped into her will be replaced with mine.”

Vash’s grin only widens so I’m sure he got a scowl out of Knives. I pull Vash closer and playfully slap his cheek.

“You be nice too, Vash… no fighting.”

He pouts, “Okay. He’s just so mean sometimes.”

I smile, “He had his fun. Now it’s your turn… You told Knives of things you wanted to do to me, right Vashu?”

His eyes widen slightly and then his cheeks redden. He looks away shyly but looks back.

“I did say some things… You want me to try?”

I kiss him, “I’m sure you can do all of those things you said.”

He kisses my nose, “Yeah?... Then I’ll do my best.”

He kisses my shoulder and then trails up my neck.

“I love you. I want to keep you beside me…forever.”

He bites down on my shoulder, “You love me too, right?”

“Of course I love you, Vash.”

My face heated up as tears rimmed my eyes. He was warm, kind, and selfless. I got a good look at his face, I press my thumb against his beauty mark, then glided my fingers through his undercut. I pull him close with a nod.
He leans in quickly and kisses me. It was desperate, pained, and full of longing. My hands begin to roam his body but he pulls back.

“I’m not perfect.”

I grip his shoulders, “I don’t want you to be. I want you.”

His eyes water and he lets me continue. I stare at his battle scars. I touch every single one, his breathing becoming heavy.

“Please…[F/N]. Can you touch me more?”

My heart raced and I let out a pleasured sigh as he kisses me, his tongue now mixing with mine. My hand rests at his V-line before going lower.

His breath hitches once I grasp him. It was warm, really warm. He moans into the kiss once I start stroking him. I pull back, my forehead resting on his as we pant.

“Is this okay, Vash?”

His eyes were pleading, “Let me… please let me have you.”

I was burning with desire. I pull at Vash to hold him close to me. He looks at the small scar on my shoulder from a past fight. I turn his cheek to look at me.

“I have some catching up to do if I want to match you.”

He frowns, “I won’t allow you to get hurt ever again.”

Knives interrupts, “What happened? When was this?”

Vash huffs, “No time to explain.”

His hands wander my body. His eyes shined bright. It was mesmerizing.

“Your eyes are so beautiful, Vash.”

He smiles, “You are beautiful, [F/N].”

I smile and kiss him. He then gets a mischievous look.

“I wanna try this again.”

I nod and he turns to where his length was hovering above my face while he hovers over my lower half. He spreads my legs and I feel his hand touch the wet arousal on my body.

“Vash.”

“I will make you feel good, I promise.”

He leans down and licks along my folds. I grip his hips but he only gets more into it. His fingers carefully held me in place as he inserts his tongue.
I look up to see his length heavy with want. I reach and touch it. Vash moans into my wanting heat.

“You don’t have to-ah.”

I take him in my mouth. He starts thrusting into my mouth, not fast but I didn’t mind. My arms wrap around his waist as I pulled his hips closer. His body shivers as I take him fully. I wanted to please him…I wanted to please both of them.
He pulls away and quickly gets back in the missionary position. He looks down and then back up. His eyes pleaded for more. I nod.
He aligns himself and slowly slides in. His movements started quickly but were careful. His eyes focus on me and his gaze was warm but intense. I pull him closer and move into his thrusts. His hips stutter but recovers quickly.

“[F/N]… I’m different too. I wanna show you.”

Knives defends, “You can’t control it, Vash.”

“I’ve gotten better… please [F/N]?”

I nod and his hair suddenly spikes up, root like appendages start to come out of his back, wrapping around me. It was a lot like the knives, they touch me carefully and I nuzzle close to the roots. Vash still looked worried.

“Am I hurting you?”

“No… keep going.”

He nods and his eyes focus on me while he thrusts into me.

“Vash… ng-ah it’s good.”

“Who’s making you feel good?”

“Y-You are.”

“Who’s making you happy?”

“You are, Vash.”

I hold him close as I claw at his back, he hisses in pain but only moans into my ear.

“I love you [F/N].”

I reach my end with his name being repeated as I hold onto him. He whines as holds me tightly. My eyes soften as his eyes remained shut and tears fell from his eyes. He sniffles before opening his eyes.

“Sorry [F/N].”

I kiss him and keep him close, “It’s okay, Vash. I love it when you’re like this.”

We snuggle for a while and Knives moves to where he’s off the couch and on the floor, looking at me. I reach for his hand and he takes it, kissing it as well.

“You okay, Vash isn’t hurting you is he?”

I smile, “I’m okay, Nai. What about you?”

He tucks my hair behind my ear before kissing me. Once he breaks the kiss he looks at Vash, asleep on my chest. He chuffs.

“Do you think he learned anything?”

I chuckle, “I think he did. I’m glad… I was worried that he would just copy you.”

Knives looks at me, “He wasn’t watching me or looking at what I was doing… he was watching you. Seeing what faces you made. Then he worked to get you to make those faces.”

I look at Vash and lightly play with his hair. I give a warm smile.

“You both are amazing.”

“You wanna head to your room? You can also come to mine. I can wake up Vash.”

I nod but Knives was getting ready to smack him so I shake my head.

“Nonono. I can wake him… Vashu…Vashu. Let’s go to bed. We can cuddle more in there.”

He groans but listens, his root retract and his hair falls to his normal, fluffy look. Knives helped me walk to his room. I go to the restroom and we all clean up before getting in bed. Knives rested his chin above my head as he held me close. Vash held onto my stomach while his head rested on my bust. Both of their legs were interlocked with each of mine.
The morning was surprising. Seeing Knives sleeping was a rare sight. He has no need for it but here he was, asleep… and relaxed. I feel a hand on my breast so I look.
Vash was awake and judging by his discarded blanket and his hand stroking himself while grasping my breast… I’d say he wanted to continue where we left off. I look to Knives and Vash says.

“He’ll wake up. C’mere.”

I scoot closer and he moves me, on top of him. We begin kissing and teasing each other’s bodies. I begin stroking him, his noises were quiet since I continued kissing him.
I kiss his neck and chest, and then my hair is suddenly grabbed and my head is turned towards Knives. Knives was now awake and he had ahold of my hair but not too hard. He looks at us both.

“You two went and started without me? Such a thing from my brother is one thing… but you [F/N]?”

He had a mischievous look, I say, “Sorry, Nai. Vash said you would wake up. We’ve barely gotten started.”

Knives pull me closer and kisses me. Vash sits up and kisses and licks around my breasts as he fondles them. Knives eyes were as intense as ever once we broke the kiss.

“N-Nai… I want you both.”

He smiles, “I can’t speak for Vash… but you have me.”

Vash turns me to look at him, “You have me too, [F/N].”

Vash starts grinding his lower half against mine. Knives gets behind me, kissing my shoulder and neck while Vash aligns himself. Knives guided me down onto Vash, Knives was grinning as he watched over my shoulder.
I moan softly as Vash thrusts up into me. I began grinding against his pelvic bone as he hit at the right angles. I turn towards Nai and my hand wraps around to grip his hair as I kiss him. I whisper.

“I want you too, Nai…please…now.”

His eyes widen slightly, “Now…are you sure?”

My eyes were half-lidded as I nod, “Please.”

He nods and pushes me more onto Vash. Vash looks confused.

“What are you doing?”

“She wants both of us, Vash.”

He looks quickly at me, “Are you sure?”

I hug him and kiss him, “I need you both… Vash… Nai.”

I feel Knives begin to insert himself. My body tightens up and he halted, waiting for me to relax. After a bit, he pushed in more. I moan out.

“It’s good… so good. You’re both so amazing.”

Knives carefully moves and Vash does the same. As one would thrust in the other was pulling away. It was constant thrusting from both of them. My heart felt like it was about to burst while my body trembled at their mercy.
Knives suddenly moves, pulling me with him. He turns me around to face him, to where my back is against Vash’s chest. Vash reinserts and Knives does the same. Knives kisses me.

“I wanted to see your face.”

His Plant markings started to glow, surprising me. I turn to Vash and he was glowing as well. My lower half felt strange. I look down and the precum that was mixed with my fluids was glowing as well. My insides felt a bit more stretched as well…did they get bigger?

Knives gets close, “When we are like this… it’s not for stimulation anymore… these marks are for connecting…mating. Is that what you want, [F/N]?”

Vash kisses my shoulder, “You can say no. We’ll switch back. Don’t pressure yourself.”

I take a deep breath, “Is there anything else that’s new?”

Knives looked a bit nervous, “I don’t know… we’ve never done this before.”

I nod, “We can continue. Just be careful.”

His eyes shined as he hugs me, I felt tears rub against my cheek.

“I promise to always take care of you.”

I can hear Vash sniffle as he kisses my shoulder, neck, and back.

“I promise to love you, cherish you, to protect you.”

They start moving again and each thrust made my eyes roll back. I felt so full, every move was like an electric shock. The three of us didn’t keep quiet with our moans.
Knives pulls me up, while on his knees, and Vash follows. The thrusts hit deeper if that was possible. They both held onto me, I had one arm wrapped around Knives while the other was holding the back of Vash’s neck.
I turn my head towards him, sloppily kissing him while Knives does the same to my neck. Knives groan into my ear.

“[F/N], I’m gonna give you everything I’ve got.”

Vash pants, “I’m gonna fill you up…so much-ah.”

I felt like I was gonna pass out. All I could do was cling onto them.

“Vash… Nai… please.”

Nai’s knives coil around us and then I see Vash’s roots doing the same. I tremble as my orgasm shook through me. Their movements still and then buckle as I feel them release. We held onto one another for what felt like hours. Knives was the first to talk, the knives and roots were slowly retreating.

“You’re so beautiful.”

I kiss him, “So are you.”

Vash nuzzles close, rubbing my stomach, “I can’t wait for you to have my baby.”

Knives scoff, “Your baby? Don’t make me laugh.”

I sigh, “Please don’t start now.”

They both sigh before cuddling with me.

 

Bonus:
Once I had the child, Vash cheered once he saw that the baby had his hair. It was a boy. Once the baby’s eyes opened Knives beamed with joy once he saw the baby had his eyes and looks. As he got older, he had Knives’s face, Vash hair, and had a mix of both of their attitudes… depending on what he wanted. The twins decided to call it a draw.