Adult-FanFiction.org : Games

Keys to the Heart X chapters	By : Wrathkal Category: +S through Z > Touhou Project (T?h? Purojekuto) > Touhou Project (T?h? Purojekuto) Views: 18463 -:- Recommendations : 0 -:- Currently Reading : 0
Disclaimer: I do not own any part of Touhou, and make no money from this in any way

Chapter List
- 6
- 7
- 8
I reach out carefully and lay my hand on Flan's shoulder. She's tense. I realize, from the way her body is trembling slightly.
"Don't worry, Flan." I do my best to reassure her.
"Onii-chan..." She whispers.
I grab my tool and line it up with the corresponding orifice, and she opens her mouth slightly, showing off her sharpened canines.
"Trust me, Flan." I say, and thrust it in.
Her body immediately tenses up, trying to halt the intrusion, and I hear her emit a whimper as it goes deeper. In her open mouth, I can see her tongue moving around as the penetration meets a momentary resistance, but eventually movement and resistance both cease, allowing further passage.
All too soon, I feel a sensation that tells me that I've reached the limit.
"O'ii-'an..." Flan slurs.
"Good girl, Flan..." I comfort her, with one arm around her body and a hand supporting her back.
One of her arms is resting on mine, and I can feel a strange warmth where our skin is in contact. On the bed, the fabric in the grip of her other hand is creaking ominously, on the verge of tearing. Her wings are shuddering weakly, almost lying limply on the bed with the crystals dull.
"Auuu~..."
"I'm going to move, Flan."
Slowly, I draw back and out of the hole, feeling the friction of the insides clearly against our connection. A short distance out, then I push back in once more, eliciting a groan from the petite vampire as I do.
Her arm shifts against mine; the feeling of her skin gliding across mine inflames me a little, and I repeat my motions with more vigor.
Three, two, one... I count silently, keeping track of the number of times with my countdown. Time to shift a little.
I adjust my body's position to suit my purposes, and begin thrusting it in from a different angle.
It clearly has an effect on Flan, as she shivers and moans throatily. "Haaauuu..."
Her mouth opens and closes, almost like a fish, but the sight of the pinkish interior is arousing in its own way, compounded by the weak movement of her tongue conveying a sort of desperation for release.
"That's good, Flan, just bear with it, good girl..." I keep up a steady flow of reassurance, keeping the child-like vampire as calm as I could.
"O'II-chaaaan~"
With the pinkish flush tingeing her cheeks, Flan's whining cry is as bad as an outright 'Come and screw the heck out of me' invitation, and I barely manage to hold myself back. Instead, I focus on completing my current task.
I guess I should try it... I pull out momentarily, looking at the glistening result. "Flan, clench your teeth for me."
This time, when I push in again, I can feel the clear difference; it's much tighter, and I feel a bit of trepidation at the thought of using too much force by accident.
"Uuuu~" The look in her eyes as she gazes back at me hints that she feels a little betrayed.
"Bear with it, Flan." I soothe.
Even as I start moving in and out once more, I recognize that the little vampire is rapidly approaching her limit from the way her crimson eyes light up with a dangerous glow. Better finish up quick.
"Uuuaaah!" Flan suddenly pushes me off her, and turns her head away, pouting.
That was actually close. She could have blown me up instead. I blink as the reality of my close escape sinks in. "Okay, go ahead and spit." Did I use to be so stubborn about brushing my teeth before?
(HAHA! HOW MANY OF YOU THOUGHT IT WAS THE REAL THING?) (1)
She doesn't stay mad at me, however. In fact, she's quite enthusiastic about showing me her clean teeth, complete with fangs. I can't decide if I'm supposed to be scared or pleased when I see the way she grins at me.
"White." I comment.
Flan glows at the compliment. "Eheh."
I try not to let my eyes go too low as I lead her back into her bedroom. Flan's body has been in the same state for the past four hundred-plus years; flat like her sister, Tewi, and Suika.
Outside of the room, I'm sure three pettankos (2) just sneezed.
But that means that she's not big enough for a bra, which means that without her dress (which I made her take off to hang up), Flan's only remaining piece of clothing is a pair of grandmother panties. (Is that the right term for it?)
"Did you have fun today, Flan?" I ask her as I seat her on the bed to start brushing her hair.
She nods enthusiastically. "Mm!"
"Good to hear that." I remove the hair ties, letting down those twin tails.
"What about you, Onii-chan?" Unexpectedly, Flan returns the question back at me.
Huh, she's actually asking about me? "I had fun too, Flan."
I pick up the brush and start running it through her hair, idly noting that her wings are moving in time with her humming. It's some strange tune, but it's not annoying or anything, just another quirk of Flan's unstable personality.
I finish combing her golden locks and put the brush away. "Okay, that's it. Time for you to go to bed, Flan."
Just as I'm about to slip off the bed, she catches hold of my sleeve. "Onii-chan... will you sleep with me tonight?"
Hrk. "You're a big girl already, Flan." Twenty times my age, at the minimum.
"But I still want Onii-chan to sleep with me~" She pulls out the big guns, pouting, whining in a pleading tone, and looking at me with puppy eyes.
Damn... "Okay."
She allows me to take off the formal outfit at least, to avoid crumpling it; I hang it up next to her dress. It feels a bit risky climbing into bed with her in just my underwear (since my usual sleepwear is all the way up in my room), but I don't exactly have a choice.
Flan lies on her front, her wings sticking out over the covers, with her head turned so she can look at me while one hand holds onto mine. It's clear she's very pleased about having me in her bed, seeing as she keeps giggling and peeking at me through the hair that falls over her eyes. This close, I can smell that flowery scent of hers very clearly.
I gesture at the torches around the room, putting a bit of magic in the way Patchy taught me to. The light dims, not enough to plunge the place into pitch darkness, but enough for me to fall asleep it.
"Onii-chan..."
"Hmm?" I look at my bedmate out of the corner of one eye.
"I love you."
"Me too, Flan. Me too." I pull our connected hands up to my lips and place a light kiss on the back of hers.
The loli vampire giggles again, but suddenly stops. "I want you."
I tense up. What?
Her red eyes are actually starting to glow, and her breathing is getting rougher. Her grip on my hand is light, but impossible for me to break out of. She starts to slide closer...
"Onii-chan..." Flan breathes, approaching me with her lips.
I'm so stunned by the turn of events that she manages to kiss me before I can do anything. At first, it's just her small lips pressed on mine, but then she starts getting bolder; she sucks lightly on my upper lip, pausing occasionally to lap at the bottom one with her tongue, before slipping it between them and into my mouth.
"Mmmm~" Flan moans into my mouth, still not relinquishing her hold on my hand.
"Flan, don't..." Even to me, my protest sounds weak.
The scarlet glow of her eyes has a predatory tinge to them. "No."
She finally lets go of my hand, but it's too late to mount any strong resistance; her left hand is already holding me down by the shoulder, and her legs are on either side of my stomach in a straddling position, pinning my right hand against my side.
"Flan..." I make one last attempt to sway her.
But part of me recognizes the truth. Any power I had over her as her 'Onii-chan', was power that she let me have. The current Flan is the one in charge, and there is no way I would be able to stop her.
"You want this too, right? Onii-chan~" Her voice sounds almost mocking, taunting, as the hand that was holding mine earlier now brushes over my covered cock, teasing it into an erection.
Where the hell did she learn how to do this? I wonder, befuddled, as I nod numbly.
"Ufufufu..." Flan chuckles softly.
Then her small hand slips under the cloth, and starts fondling me directly. I stare up at Flan, and she licks her lips almost hungrily while her hand dances over my shaft, stroking along its length. Then suddenly, with a flourish, she slips it out of its prison to let it stand upright.
"So big, Onii-chan..." She coos.
I barely realize that the hand holding me down is gone, and instead running lightly over its owner's chest, plying her tiny pink nipples with a mischievous touch. As I continue to watch, Flan brings her right hand in front of her mouth and starts licking it, covering it with her drool. Then she puts it back on my cock and starts working it up and down with its new lubrication.
Damn, that's actually quite good... My gaze drops down to the faint patch of white in the dim light, my attention drawn to the feeling of dampness against my stomach.
"Aha." Flan lets out a short laugh at catching my wavering attention. "So you do want me after all!"
"Flan... What's gotten into you?" I gasp out, trying not to fall prey to the pleasing grip she has on me.
"Onii-chan smells so good when he's like this, you know?" She talks quietly, as though confiding in me. "Flan loves how Onii-chan's smell gets her SO~ hot..." Her fingers sweep over the tip of my dick, and she brings it to her mouth, sucking it clean loudly. "And it tastes good, too."
I reach up with my left hand to try and push her off, but she grabs it and places it on her chest, right over her nipple.
"But Flan wants more... Flan wants Onii-chan to touch her all over, to play with her body, to fill her up..." Her voice suddenly drops into a threatening tone, "Just like Onii-chan does with that oni."
Damn, so she WAS peeping on me and Suika! "But..."
"You'll do so, right? Onii-chan." Flan presses me in a sweet tone of voice, "Onii-chan loves Flan too, right?"
"I..."
Her left hand suddenly drops down, into her panties. With a quick yank and a sharp tearing sound, she rips them off her lower body, exposing her wet sex.
"Look, Onii-chan," She calls out to me seductively, "Look at how hot you got me."
"This, this isn't you, Flan..." I keep trying to resist, but she's wearing me down.
"It is... Flandre is a naughty little girl... Won't you punish your naughty Flan, Onii-chan?"
She suddenly stops stroking my cock and bends down, putting her head near mine, and starts to lick around my face.
"I want you... Mm, to be my first... Onii-chan..."
One moment she's acting like some experienced seductress, and the next she's talking about her first? Seriously, what's... oh, oh damn... My train of thought gets derailed as Flan starts grinding her butt against my erection.
"Haa... what did that oni... call it...?" I can feel Flan's pants on my collarbone. "Ski-skinship... Hey... do some skinship with me, Onii-chan..."
Despite having some difficulty in forming coherent thoughts, my mind is still able to think in emotional terms. And I did have a lot of things to consider... While part of me doesn't like the way Flan is acting, the majority of me recognizes her desire and is raring to respond to it. Of course, there is also the small possibility she might go berserk if I refuse her and kill me, but...
Something snaps inside of me. Guess I'll give in and grant my little sister's wish.
She surprisingly doesn't resist when I roll her over and get on top of her, cupping her cheek with one hand, but instead shows me a dark, inviting smile. A smile I would expect of her sister... it seems that blood doesn't lie after all.
"I'm gonna eat you then." I whisper, and get a giggle in reply.
"Or maybe I'll eat you."
The meaning of her words becomes clear when I go in for a kiss; she returns it forcefully, as though striving for dominance in our connection. It causes me to respond instinctively, and retaliate with my tongue.
Wonder if vampire saliva has any effect on humans besides being supposedly anticoagulant...? I take care not to cut myself on her fangs as I explore her small mouth orally. Kinda... intoxicating...
My fingers grope around, and find hers, interlacing with them even as her body flinches when the tent I'm pitching brushes against her sex.
"Mm~" We moan into each other's mouth.
Then suddenly, before I realize what her intentions are, she submits, leaving me with the intense desire to assert my dominance over her... a deed accomplishable only through one single act.
"Take me."
It's rather unfair of me, but I blame Suika for starting me on this path.
Of course, I'm not going to just jam it in; that would be seriously painful. I start off by gently rubbing her puffy nether lips, stimulating them so that her juices flow more easily while I lap at her nipples, tracing my tongue around the almost nonexistent bulge of a breast.
"Mm... ah... yes... nice..." Flan responds appreciatively, encouraging me to go further.
My massage goes further with a single probing digit, and she gasps, tensing up slightly. Still, her body doesn't refuse it, but instead begs for more with an increase in outflow. Her hands move my head over to the side to take care of the other cherry on her chest, and I oblige.
It's a struggle getting her loose enough for two fingers, and even then, there's a lot of pressure trying to move them in and out of her.
"Hurry up..." I hear her breathe out sultrily.
I freeze, and look up. Her glowing red eyes enthrall me, telling me to just take her regardless of whether she's ready or not.
If I do, I'll hurt her... Just fuck her already... I can't... Do it... No... Yes... Her intentions clash with mine, and I hear her growl in frustration.
"Onii-chan... Flan can't wait anymore... put it in... please?" Previously inviting eyes suddenly look at me beseechingly, with the expectant air of a puppy awaiting a treat.
So she cheated and played the cuteness card. For a brief moment, I get the image of a wolf howling in lust, before I sheathe my erect cock inside her.
"Nnnggghhh..." The vampire groans as I push deep into her core, "Oh yessss... fill me up!"
Fucking tight! Wait, wait, waaaaait... I blink, and realize just what I've done. "Flan?"
"Yes, Onii-chan?" She replies innocently.
"Could you explain why I'm... like this?" I change the term I was about to use at the last moment due to her apparent innocence.
"...maybe?"
"..." I glance down at where we're connected, looking at the small bit of blood that's leaking out from around my cock.
"..."
"I'm wait-"
Her eyes glow crimson as they lock onto mine. "Fuck me already, Onii-chan."
The world dissolves into a bloody haze of pleasure. Somewhere in my mind, I'm aware that I'm driving my hips back and forth, pumping the heck out of Flan's virgin hole, and ravaging it according to my base desires. But I can't stop myself.
Beneath me, Flan is moaning and grunting, her nails drawing blood on my back as she clutches onto me.
"Feels good... doesn't it... Onii-chan...?" She pants, keeping her eyes trained on mine, "Fuck your little sister... fuck her!"
You know, That voice in my head suddenly speaks up, I have nothing against screwing Flan like this, but I just can't accept being controlled into doing so.
Then what do you propose?
I don't know, It replies cheerfully, How about telling her you want to make love to her rather than... drilling the fuck out of her cunt?
That's actually quite a good idea...
Hey, The voice sounds injured, I don't always act that way, you know.
I ignore both it and Flan's commands, and stop.
"What's wrong? Why aren't you moving?" She demands.
"Flan, don't force yourself. And don't force me either." I add as an afterthought.
The petite vampire blinks in surprise, further breaking the spell she had on me.
I lean forward and kiss her softly, lightly. "I love you, Flan."
It's small, but I hear an intake of breath. Even without that, I'm aware that I had an effect on her; her tight hole grows even tighter as her emotions respond to my declaration.
"Does it hurt?" I ask, putting as much concern as I can into those words.
Flan blinks again, clearly taken by surprise.
"It's supposed to feel good, but not when it's rough..." I say by way of explanation.
Actually, now that I'm out of her enthrallment, the friction pain is starting to get to me, and it feels like we're both bleeding heavily on the bed sheets, despite natural lubrication.
"O...Onii-chan...?" The dark version of Flan is suddenly just gone, leaving the little sister I know and love.
"Yes?"
"It hurts, but..." Flan kisses my lips, "Please finish it."
"Okay."
I want to fulfill her request, but it's extremely tough considering that the slightest movement makes me feel like I have needles stabbing me down there. How the heck am I gonna cum like this?
"Onii-chan?"
Guess I have to suck it up for her... I grit my teeth and pull out, wincing as I catch sight of my raw and bloody member. "Let's change positions a little, Flan."
Moving carefully, I seat myself on the edge of the bed and pull her in front of me, steadying her when her legs fail to support her properly. But the position gives me a clear view of Flan's... Ugh, I just don't get how some people get turned on by guro (3); not only can I smell the blood, but if not for the dim light, I might have been put off entirely by how it probably looks. Yet somehow, even with the pain in my dick, it still manages to stay in its erect state.
Okay, just keep your eyes off it. I manipulate Flan into position, placing her gaping vagina above my cock. "Are you ready, Flan?" Oh wait, it's stupid to ask this now... closing the barn door after the animals have escaped...
"Mm."
Supporting the small of her back with my left hand, I gently grip her butt with my right and lower her slowly. Both of us let out small sounds of pain as our abused sexes come into contact; Flan gouges another series of scratches into my back, but does nothing else. Bit by bit, I slide back into her, accepting the pain of her tight tunnel
Flan starts crying, and for a moment I fear that I hurt her.
"Flan has, Flan has, become one with Onii-chan..."
For a moment, I'm at a loss as to what to say. Flandre Scarlet might be a centuries-old vampire, but at that moment, she's acting like an innocent child whose wish of being joined to a loved one had just been fulfilled.
But the moment soon passes, and I pat her head encouragingly. "That's good, Flan..."
Still, it was hard enough getting inside her. How am I supposed to...
"Can't cum? Need some help, Onii-chan?"
Aaaand she's back again. "You know, Flandre... if you didn't force it, she might have had a better first experience." I wince as she shifts around on top of me with me still inside her.
The vampire smirks, and sits up slightly. "Oh, but how do you know that I'm not enjoying it already?"
"Right, you and her are one and the sa- HRRRRGHKKK!"
Pain. PAIN. It hurts, right where she bit into my neck.
"And don't you forget it, Onii-chan." She whispers into my ear as my body starts to move on its own again, despite the lack of eye contact.
The pain spreads throughout my body, reaching further down...
Then suddenly, it's gone.
Replaced by an irresistible heat.
Then finally, utter darkness.

(1) Inspiration taken from the toothbrushing scene from Nisemonogatari.
(2) Flat chested girls.
(3) Seriously something normal people should not know. Japan comes up with a lot of weird shit. If you really want to know, the mildest explanation I can think of is having a fetish for snuff material.
Well, that was rather short, wasn't it? Frankly, despite the number of Flandre doujins that I have translated, and her natural imouto cuteness, Flandre is not one of my favorite girls. Possible favorite character yes, but not a favorite girl. So I didn't feel to motivated to make it more erotic.
Recently finished my exams, but I'm due to start a part-time job soon, and will have my writing time limited. Still, there's a great deal of stuff to catch up on, namely stuff to read and visual novels to play, so inspiration is very low.
Anyway, just have to keep writing. I hope my muse will help keep my writing interesting to my readers!
- 6
- 7
- 8
You need to be logged in to leave a review for this story.You need to be logged in to leave a review for this story.
Report Story

Keys to the Heart X chapters