Within the living quarters of the Planeptune Basilicom things were relatively normal. The Basilicom being filled with the sounds of Neptune gaming out, then later getting annoyed once she had reached a difficult part of it, though it didn't stop her from continuing to play while Histoire continued to nag at her to get her work done.
However something was out of the ordinary for the Planeptune Basilicom, that being the mature level headed sister of the two being locked away in her room for hours on end for the past week following an experiment of hers. Only coming out to either eat or sneakily grab more tissue boxes.
'Okay... it's finally gone down now.' Nepgear thought to herself, the purple haired girl finally coming out of her room in the middle of the day which was a break in her new routine. "Just need to... think normal thoughts." The CPU Candidate told herself, starting to make her way over to the living room. "...Tools! Tinkering! Technology! Circuit boards! Gear shafts!... Wait no! Not shafts! Deity of Sin! Deity of Sin!" She started to rapidly repeat in her head.
While continuing to keep her head off certain thoughts she ended up unknowingly walking into the living room rather quickly where Neptune was, the lazy goddess doing her usual routine of gaming out and suffering Histoire lectures.
Histoire had taken in a deep breath and exhaled through her nose, very annoyed at the fact she was nagging Neptune for a good while now, with the goddess in question still gaming to her heart's content. "Neptune! Will you listen to me already, young lady?! You've been playing your video game for far too long now! It's time for you to GET! SOME! WORK! DONE!" Histoire shouted, putting emphasis on the last part of her rant.
"I can't, Histy! I'm in the endgame right now!" Neptune off-handedly told the tiny Oracle, not even bothering to glance back at Histoire as her eyes were glued to the TV screen, button mashing to her heart's content. She lacked her usual hoodie, which laid messily on the ground, leaving her in just a blue tube top and matching panties that left little to the imagination.
'I know you're admiring me, you dirty readers!' Neptune added mentally, the power of her fourth wall abilities coming in strong.
With Nepgear being so preoccupied in her thoughts she didn't even realize she found herself in the living room, completely blocking out everything while she kept her head down and held her skirt down.
To the CPU Candidate's dismay, Histoire was able to catch her out of the corner of her eye and quickly called her over. "Ah! Nepgear, perhaps you can talk some sense into Neptune. She's being particularly difficult today!" The tiny Oracle complained, shooting the goddess in question a disapproving look.
"Huh?" Nepgear muttered out, Histoire snapping the girl out of her trance which led to her gazing over to where they currently were which was the CPU Candidate's greatest mistake.
It was there she got a complete unobstructed view of her sister in her undergarments, it made her cheeks flush red and her eyes widen. Nepgear hungrily drank in the sight of Neptune's body, admiring her lithe shoulders before her eyes moved downwards to take in the sight of her gorgeously smooth and flawless legs.
All the sights made Nepgear go wild, evident by her taking in heavy breaths without even realizing it while her skirt started to prop up a bit, but it wasn't noticeable enough to catch Histoire or Neptune's attention.
"Come onnnn, Histy. Why don't you go bug Uzume or something to do all that boring paperwork... GAH! I died again!" Neptune threw her controller in the air as a big GAME OVER screen flashed at her face, a pout coming shortly after, not paying attention when the controller hit Histoire in the head.
"OW!" Histoire cried out, rubbing her head while shooting Neptune a slight glare before turning her attention back to Nepgear. "Well?" Histoire asked with crossed arms, her annoyance at Neptune bleeding into Nepgear. "You decided to grace us with your presence at long last, Nepgear. Do you have something you wish to say?"
"U-Ummm..." Nepgear droned out, not taking her eyes off Neptune while the Candidate continued to take in heavy breaths while her face seemed to get redder and redder the more she was staring at Neptune, thinking a hundred thoughts she knew she definitely shouldn't be having about her sister.
It was those thoughts that finally made Nepgear realize she was starting to pitch a tent that was slowly becoming more noticeable, panicking as she darted her eyes around and set them on an object on the coffee table she had grown all too familiar with the past week.
"I just... came to get this tissue box!" Nepgear hastily swiped the box and darted. "I'll be in my room! Bye!" She shouted from down the hall, the two hearing her quickly shut and lock her door.
Histoire's stern expression softened at Nepgear's odd behavior, finally taking it in now that she had seen it first hand. "...Nepgear's been acting awfully strange ever since that experiment of hers ended in failure."
"Hmph, this is a stupid game anyway..." Neptune groaned as she finally stood up, shutting off the TV and staring at where Nepgear left. "Now that ya mention it, Nepgear's been spending a lotta time in her room these days. As her big sister, I have a right to know what's going on!"
"This may not be what I wanted but at the very least she's being productive." Histoire remarked to herself then turned her focus back to Neptune. "Yes. Please do get at the bottom of this, but do be careful. There is a possibility she might be sick, I've noticed we seem to be running out of tissues at a far faster rate compared to before."
"Look who you're talking to, Histy! I'm the Queen of Carefulness!" Neptune said with a big smile, and then promptly left the tiny Oracle in the living room to go see her sister. She walked down the halls for a bit, then turned to their shared bedroom and knocked on the door. "Nepgear! Are ya in there?"
On the inside of the room there wasn't a peep from Nepgear, the Candidate having stripped off all her clothes, rendering her completely naked while she had a pair of headphones on and was watching porn video of two women going at it with each other.
That sight alone would've been somewhat out of the ordinary, given that Nepgear wasn't really the type to indulge in such a thing, but what really made it stick out was the fact the Candidate wasn't even touching her pussy through the whole thing.
Rather... she was stroking the six inch cock that rested above her pussy, the shaft already being completely rock hard despite her being aroused just mere moments ago. Though that didn't matter much to Nepgear, who kept stroking it vigorously, trying to orgasm as fast as she could 'Why isn't this working? I barely get any excitement from this anymore…' Nepgear inwardly despaired, the soft moans she was letting out barely audible from the door.
"Nepgear? Neeeeepgeeeeear?" Neptune knocked on the door, but she didn't get a single reply from her younger sister. Out of curiosity, Neptune pressed her ear against the door, and she did hear what sounded like heavy breathing coming from the inside. "Oh jeez, is she actually sick? Don't worry, I'm coming, Nepgear!"
With that, Neptune blissfully opened the door... and got greeted by a surprising sight. "How are ya— WHAT THE HECK?!"
If the soft knocks on the door didn't get Nepgear's attention, Neptune's surprised shout definitely did. "AAAAAH! NEPTUNE!" Nepgear yelled, throwing her headphones off and fumbling to close the video tabs she had open before hiding behind the chair she was sitting on. "...Uhhhhh... wh-what are you doing here, sis?" The Candidate nervously asked, acting as if she hadn't been caught stroking off a cock she clearly never had before.
"I, uh... Thought you were... sick..." Neptune had a little trouble keeping her focus straight, as her eyes instantly went down to the long hard shaft that she definitely didn't remember Nepgear having before. "Since you were acting kinda weird, but uh... Did you always have that? That thing? I don't really remember that being a thing."
Even though she was caught red handed, Nepgear still tried to feign innocence in a vain attempt to keep her shameful secret. "U-Uhhh... h-had wh-what thing, sis? I-I don't know what you're talking about!"
"You don't see the big dick on you?!" Neptune yelled, almost loud enough for it to echo. "It's huuuuge!"
"D-Don't scream it out at the top of your lungs!" Nepgear urgently begged, the Candidate still making sure her body was hidden behind the chair.
"R-Right, uh... Hm..." Neptune looked awkward, but she walked closer to her younger sister, which caused her to shrink. "Come on, Nepgear. You can't hide that thing from me."
Nepgear was lowkey tempted to transform and escape that way but knew it'll only bring more trouble. The Candidate knew what her only option was, at this point she'd only be delaying the inevitable so it was better to just rip the band-aid off and get it over with as fast as possible.
Letting out a heavy sigh, she finally relented. "...Okay okay... fine... just... please don't freak out too much when you see it again... okay?"
"Relax, Nepgear. You can trust me!" Neptune attempted to assure her, though Nepgear didn't feel very assured at all, but she went ahead anyway.
"O-Okay then..." Nepgear said, her voice filled with nervousness before finally stepping out from behind the chair. The two had bathed together on occasion from their many adventures so Nepgear wasn't that bothered by being naked in front of her.
The real embarrassment, of course, came from Neptune staring at her new cock. The fleshy appendage still rock hard and standing at attention, to further pile onto Nepgear's already large amount of shame, the dick also twitched her and there from how needy it was. "...H-Here... here it is..."
Neptune flushed a bright pink as she started at her sister's rock hard cock. She had never seen an actual dick before, so the fact her first exposure to one was from her own sister was quite something.
"G-Geez, uh... Where did that come from? And why is it so... Twitchy?"
"Because this stupid thing is always super needy!" Nepgear shouted, her annoyance at her dick finally reaching a boiling point. "No matter how many times I masturbate it always gets hard super easily! Do you have any idea how often I had to take out the trash bin because it was overflowing with used tissues!? Three times this week!"
"T-That's... A lot..." Neptune muttered. She normally wasn't very mindful when it came to being naked around other girls, but for some reason a dick made her flustered. "Huh, so you're always like... perma-horny? Is that why you've been acting weird after that experiment?"
"...Yes, ever since that blasted experiment I've had this thing..." Nepgear answered with a sigh before looking down at her dick with disdain. "...I tried to ignore it but it felt like I was about to go insane from how pent up it made me... I thought I had it under control from all the masturbating I was doing but it comes back with a vengeance every single time."
"Sounds like it's a real issue .."
Unbeknownst to Neptune, considering her state of undress, Nepgear was still looking at her and her mind couldn't help but fantasize about her own sister.
Nepgear's heavy breathing came back in full force despite already shooting her load a few times now, she hungrily gazed at her sister's body, wanting to so strongly just grab Neptune and pin her down to the bed and fuck so hard to the point of her not being able to walk straight. Though, Nepgear's rationality was able to take hold of her mind for a brief moment and chastise her. 'What the goodness am I thinking!? That's my sister! I can't have sex with her!'
"...Y-Yeah... i-it is..." Nepgear said between all her shaky breaths. "...C-Could you... could you..." She tried to say she wanted to be left alone, but with all the horny thoughts in her mind she ended up blurting out a wildly different sentence then what she had intended. "...Have sex with me?"
"What."
Neptune blanched at that suggestion, her brain blue-screening as she took a moment to process what exactly had been said to her. Once she did, her face flared up a bright red. "Y-You... I... Uh..."
It only took a millisecond for Nepgear's hands to immediately fly over her mouth at the ludicrous suggestion that escaped her lips. The atmosphere between the two was extremely thick and filled with the most awkward silence any of them had ever experienced as Nepgear's request lingered in the air.
Many awkward seconds passed between the two sisters before it was broken by Nepgear's face becoming the brightest shade of crimson possible. "AAAAH! I'M SORRY I'M SORRY! PLEASE PLEASE IGNORE THAT I DON'T KNOW WHAT CAME OVER ME!" Nepgear cried out, covering her face with her hands, not able to bare looking Neptune in the eye.
Neptune was at a loss of words at first, unsure of how to process the events that were playing out before her. A part of her just wanted to leave without a word and forget this conversation ever happened.
But, her big sister side kicked in, and that side really wanted to help her younger sister with her problem, however strange it was.
"You know what, screw it!" Neptune suddenly declared, moving close to Neogear with a determined, yet flustered face. "You need relief, right? Then let's do this!"
Nepgear's brain couldn't properly process Neptune's words at the moment, being too mortified from her earlier suggestion. "PLEASE PLEASE DON'T SEE ME AS A FREAK THIS STUPID THING JUST-..." The Candidate said before her brain finally caught up. "...w-wait... what?"
"Did I stutter? Let's do it!" Neptune declared, grabbing Nepgear by the shoulders and looked her dead in the eyes. "If we need to have sex so you can be at peace, then I'll be more than happy to help! Fuck me as much as you want!"
"U-Ummm... uhhhh..." Nepgear droned out, her brain not able to comprehend the fact her sister not only agreed to have sex with her but the fact she seemed eager about it. The Candidate's dick twitched in anticipation at the prospect of finally being able to fuck a pussy,. Though, Nepgear's rational side was still able to be in control. "...A-Are you... SURE about this, Neptune? Th-This is a pretty big deal you know?"
"Nepgear, if it's for you, I'd do anything! Well, maybe except covering up a murder or something..." Neptune thought for a moment, then shook her head. "Well, whatever. If you need it, I'm there for you. Even if it's a little... weird. I still love you all the same!"
With Neptune's assurances any and all rational thoughts seemed to finally but out the window, the Candidate managing to give her sister a warm smile despite how horny she was. "...Th-Thank you, Neptune... let's start right away, I don't think I can handle myself for much longer."
Neptune nodded with determination and quickly went to work. She grabbed the edges of her tube top and pulled it over her head before tossing it to the side, exposing her petite, perky tits. After that, she pulled down her panties and kicked them away, showing Nepgear her shaved pussy.
"W-Well, what do you think of your big sister, Nepgear?"
Nepgear's urges went into overdrive from seeing her naked sister in all her glory, desperately wanting to pounce on her and fuck her senseless right then and there, not even caring if it was gonna be on the floor. Like with before she was still able to keep herself in check, she could stand to be patient just a little while longer.
It would make the moment where she finally stuck her hard shaft into sister all the more sweeter. "...Y-You... you look incredible, Neptune." Nepgear breathed out, her heavy lustful breaths becoming more intense.
"Heh! I always knew I had a banging body." Neptune grinned in self-satisfaction, trying to make the situation as normal as possible before her eyes went to Nepgear's throbbing cock again. She took a moment to think, before her slender fingers gently touch her dick, feeling how hot it was against her hand.
"A-Aaaaaah~..." Nepgear let out a shaky moan and bucked her hips forward, trying to get more of Neptune's touch on her needy cock. Even if it was just for a second, feeling another person's fingers on her hard rod gave Nepgear a whole new form of sexual excitement she had been so desperately craving. "...D-Do that again, Neptune~... please~..."
Neptune nodded silently, and opted to wrap her entire hand around Nepgear's cock. She could feel her sister shiver under her touch, before she slowly began to jerk Nepgear off with her hand.
Nepgear's moans grew more passionately from her sister's handjob, her fingers felt amazing, but her entire hand was absolute heaven to the Candidate. Even though the handjob went on for just a few seconds Nepgear's legs were already buckling from the blissful pleasure she was getting. After spending hours on end masturbating the day away, the itch that had been plaguing her was finally starting to get scratched at long last.
Neptune's arm unconsciously slid around Nepgear's waist when her sister started to buckle, holding her steady as she gave her sister a handjob. Neptune could feel her dick twitching and pulsating in her hand, and the tip was already starting to leak precum after just a few seconds.
Planeptune's CPU still didn't fully know how to feel about being in a situation like this with her own sister, but she kept her mind focused on helping her with her problem.
Nepgear's soft moans were soon the only thing filling the room, her sister's hand working wonders on her hard shaft that milked more precum from her tip that ended up dribbling out and leaking down the underside of her cock. Neptune's hand had started to smear it all over Nepgear's rock hard dick, lubing up the shaft very effectively.
The handjob didn't even pass the five minute mark before Nepgear started to feel the familiar pressure building within her dick. "N-No! Not yet! I need to enjoy this just a little longer!" The Candidate firmly told herself, clenching her fists to hold of her orgasm just a little while longer to further bask in the taboo pleasure of her sister's handjob.
Neptune continued her hand job, noticing Nepgear's expression and shaky posture. She deliberately slowed down her hand's motions to draw out Nepgear's pleasure, wanting her younger sister to enjoy it as much as possible despite the taboo nature of it all.
However, she still wanted to tease Nepgear a little, so she smirked a bit and leaned into Nepgear's ear. She blew into it, before she stuck her tongue out and started nibbling on her earlobe.
"Aaah~! Neptune~!" Nepgear cried out, not expecting such a little act to be so stimulating, yet here she was shaking in pleasure from it.
The Candidate was so lost in all the sensations going through her head she didn't notice Neptune's free hand gliding over her waist and worming it's way down to pass her cock to reach the area Nepgear had long since neglected ever since getting her cock.
Her sopping wet pussy.
Wasting no time, Neptune quickly plunged her fingers into the soaked entrance, further making Nepgear's legs buckle to the point where she almost had to be held up by her sister. The Candidate's mind went absolutely wild, unable to fully comprehend the sensation of having her two sets of genitalia pleased at once.
Nepgear's dam nearly burst right there but she by some miracle was still able to hold it off. But with her pussy and cock being pleased, along with her earlobe being nibbled on, it was clear the Candidate was hanging by a thread at this rate, mere moments away from screaming out and shooting her hot load all over the place.
"Come on, Nepgear! Cum as much as you want!" Neptune encouraged her sister, as she vigorously pumped off her most sensitive areas with a determined look on her face. "It's not healthy to hold it all in! Unless you want a little more stimulation...?"
Saying that, Neptune focused her gaze on Nepgear's perky tits. Licking her lips, she leaned down and started teasing her nipples with her tongue, giving her sister an extra edge of stimulation she didn't think was possible.
"AAAH! NEPTUUUUUUUUUNE~!" Nepgear moaned loudly, any and all resistance she had was now completely broken down from the huge onslaught of stimulation her body was being wracked with. Safe to say the Candidate didn't last long, as within a matter of moments her cock began throbbing intently before shooting out a large load of her semen, managing to hit Neptune in the stomach with the warm gooey white stuff.
Once her first orgasm was finally reached, Nepgear's legs ended up wobbling, making her grab onto Neptune to support herself while she reeled back from the amazing orgasm she had.
"Gah! That's a lot!" Neptune cried out, almost recoiling from how much cum had shot out of Nepgear's rigid dick. Some of it had ended up on the floor, entangled with the carpet, and Neptune's hand was absolutely coated in the white stuff.
She probably would have been grossed out by this normally, but since it helped Nepgear feel better, she tried to take it in stride as much as possible. "Well... How do you feel? Better?"
"I... still feel... really pent up..." Nepgear admitted between breaths, now holding onto Neptune's shoulders to keep herself up while she reeled back from her incredible orgasm. "...But... that felt... so much more... incredible... then any of my... masturbation sessions..."
"Then that means this is working. We gotta keep it up until you're empty!" Neptune said, her eyes moving down and noticing how her sister's cock was still so hard and rigid even after an intense orgasm like that. "B-But, uh, I'm not really used to stuff like this... What do you want to do...?"
"...Well... ummm..." Nepgaer nervously mumbled, pressing her fingers together while shooting her sister a sheepish look. "...c-can... can you..." The Candidate's face grew the brightest shade of red possible as she finished up the rest of her sentence. "...u-use your... m-mouth on it?..."
Neptune flared up as much as Nepgear did, but she still resolved to help her younger sister. With that in mind, Planeptune's Goddess got on her knees and face Nepgear's dick. She shuddered a little as she made eye contact with it, noticing that it still had some droplets of cum on it. It twitched at her, clearly waiting to be sucked off.
Neptune took a deep breath, then started to lean in and licked Nepgear's tip with her tongue. She grabbed the shaft with her hand again and gently stroked Nepgear off as her tongue slid around the base of her penis.
Nepgear let out a shaky breath then put her hands on Neptune's, gently grabbing handfuls of her sister's light purple hair trying her best to keep herself steady while she felt Neptune's tongue work its magic on her sensitive tip and the base of her shaft.
The warmth from the Planeptune CPU's hot wriggling muscle feeling even more amazing then her hand, which was still stroking her needy shaft that further added to Nepgear's pleasure, her shaky breaths now transitioning to full on soft moaning. "O-Oooh~... Neptune~..."
Neptune ceased her hand motions, causing Nepgear to whimper a little when she stopped, before she moved to fully engulf Nepgear's shaft into her mouth. She slowly moved her head down, fighting back her gag reflex as her tongue swirled around Nepgear's dick, before she started to bob her head up and down.
Neptune began to create a rhythm for things with her mouth, and with her hands free, she aimed for Nepgear's pussy yet again, her fingers teasing the wet folds and getting her sister off.
"Aaaaaah~!" Nepgear moaned, her knees twitching inward from how incredible it felt to have both of her intimate areas touched and pleased in such a way, Neptune's fingers working masterfully on her leaky pussy while her mouth continued to be absolute heaven on her hard rod. The Planeptune CPU's tongue was also doing amazing work on her shaft, swirling itself around her tip before moving to run it on the underside of Nepgear's cock.
Slowly, Nepgear started to feel the build up within her cock, but it was still bound to be awhile before the Candidate would be ready to shoot out another load. "...N-Neptune, your mouth is so amazing~" Nepgear sensually complimented.
Neptune would have responded to the praise, if her mouth wasn't full of her sister's cock. She did hum in acknowledgement as she went down on Nepgear, her tongue slithering around Nepgear's bulbous penis as if she were sucking on a lollipop.
She didn't really know the first thing about doing oral, but she must have been doing something right if Nepgear's moans were anything to go by. She could taste the pre-cum leaking out of her shaft, and she swirled it around her mouth to savor the flavor of it. It tasted oddly sweet.
Like with before, the Candidate found herself approaching her orgasm quickly, the pleasurable pressure building up within her cock at a rapid rate. Quickly, Nepgear found herself clenching down trying to hold off her release just a little bit longer if only to enjoy the amazing sensations Neptune's mouth and fingers gave her.
Speaking of her fingers, Nepgear's clenching down also resulted in her pussy clamping down tight onto her sister's digits, making her feel every inch of Neptune's delicate small fingers that continued to pump away into her and at a steady pace. Slowly the room became a cacophony of sex noises, ranging from the lewd squelching noises that came from Nepgear's pussy to the slurping noises that came from Neptune sucking her little sister off.
Neptune's fingers started to increase their pacing inside of Nepgear' , causing Nepgear to gasp and buck her hips forward in an unconscious movement. Her juices came down her legs akin to a waterfall, as the fingering combined with the sucking was like a touch of heaven for the Candidate.
The next couple of minutes were absolute bliss to Nepgear, at that point she had started to thrust into Neptune's mouth instinctively, making small gagging noises coming from her sister that honestly aroused the Candidate even further than before.
Neptune's fingers continued to do their magic on her sopping wet pussy, her juices trailing out of her sodden folds and onto her sister's hand, most of the Candidate's fluids ending up flowing down her inner thighs with how wet she was getting from her cock getting sucked off.
"N-Neptune!" Nepgear cried out, still moaning softly while Neptune's mouth kept giving her little sister pleasure like never before where she felt Nepgear's cock began to throb. "I'm g-gonna... y-y-you're gonna make me-!" The Candidate's sentence ended up getting finished for her by her cock, which throbbed much more intensely compared to earlier before finally blowing her second load of the day, filling up Neptune's mouth with her hot thick white load.
"Ghk!" Neptune, of course, wasn't quite used to swallowing a bunch of cum at once. As soon as Nepgear came, Neptune instantly pulled out and spit the white stuff out onto the floor, coughing right afterwards and hacking what was left before she took another deep breath, before looking back at her younger sister. "G-Geez, that wasn't very nice..."
"O-Oh... s-sorry, sis..." Nepgear sheepishly apologized, pressing her two fingers together. Meanwhile her dick was still erect and standing at attention, along with twitching slightly in arousal at the sight of her cum dribbling out of Neptune's mouth. "...Y-Y-Your mouth just..." The Candidate's blush came back with a vengeance while she got out the rest of her sentence. "...f-felt so amazing. So... I... couldn't help myself."
"Ah, it's alright..." Neptune played it off with her typical easy smile, though she noticed just how hard her sister still was. "G-Geez, just how much do you got in you...?"
"...I... I don't know..." Nepgear sighed, still showing annoyance at her dick but felt like she was getting somewhat near the end. "...but... I'm getting much more relief with each orgasm... we just gotta keep at it a little while longer." The Candidate then shot her sister an apologetic look while pressing her fingers together again. "...I... I hope that isn't too much trouble."
"Weeeellll, since we're already going this far..." In a sudden instant, a bright light enveloped Neptune, causing Nepgear to cover her eyes from the sudden flash. When it died down, Purple Heart, in all her beauty, had taken Neptune's place. Like her human form, she was completely naked, and she stood over her younger sister as she winked at her. "Then I feel as though this form would be much more suitable for you..."
If it were at all possible, Nepgear was certain her dick somehow managed to get harder upon seeing the naked Goddess before her. The Candidate was even drooling from how taken aback she was by Purple Heart's looks, even without any clothing on she still managed to look so beautiful and noble.
Swallowing the huge lump of salvia that had built up within her mouth, Nepgear walked towards Purple Heart as if she were in a trance. The Candidate now doing her thinking with the head between her legs rather than the one on her shoulders while her hard rod twitched madly, with her hands, she had them ready to grope the luscious, dare she say perfect, globes of flesh before her.
Having closed the distance between them, Nepgear planted her face directly into Purple Heart's bosom, rubbing her face between the set of incredible tits before her. Meanwhile her hands went to town on them, grabbing large handfuls of the tits and kneading them like they were dough. "...You look so..." Nepgear paused for a brief moment to stare up at Purple Heart's gorgeous blue eyes. "...perfect Neptune~..." The Candidate complimented, her voice completely etched in lust.
"Hehe, I've heard that so many times, but it feels special hearing it coming from you, Nepgear~" Purple Heart stroked her younger sister's head, allowing the younger girl to play with her large breasts. There were a lot of men, and even some women, who would have killed to be in Nepgear's position right now.
At the same time, Purple Heart could feel Nepgear's rigid cock rubbing up against her stomach, precum already leaking out as her younger sister needily grinded up against the older woman. With a caring look, her soft hand moved down and gently stroked it with her slender fingers, causing Nepgear to shiver.
Nepgear's heavy lustful breathing came back in full force stronger then ever, Purple Heart's hand was of course much larger compared to Neptune's, but it also somehow get more supple compared to her.
But the Candidate wasn't interested in another handjob, as tempting as it may be, instead two big mounds had more than piqued her interest.
Still having her face buried within the two soft sets of tits, Nepgear lustfully looked up at her sister once more. "C-Can… Can you use these." She gave the two big breasts a nice long squeeze to emphasize her point. "…on me, Neptune~"
Purple Heart gave Nepgear a tender smile in response. Without a word, her older sister took her hand and led her to the nearby bed, where she sat Nepgear on the edge before gently pushing her on her back. Her dick stood hard and at attention and Purple Heart gazed at it and licked her lips.
"I'll make you feel amazing..." Purple Heart said in a sultry tone, before she lowered her large breasts onto Nepgear's needy cock, watching the girl twitch before she pressed her mounds together with her hands.
Nepgear ended up instinctively thrusting her hips upwards when her hard cock was finally met with the soft embrace of Purple Heart's pillowy tits. The Candidate was now extremely grateful she didn't ask for another handjob, with Purple Heart's breasts easily outclassing any pleasure her hand could bring.
Unsurprisingly, the Candidate could barely keep herself quiet, letting out soft moans that gradually increased in volume and intensity with the more Purple Heart continued to tease her cock. In an effort to control herself, Nepgear tightly gripped onto the bedsheets below her, trying her best to keep herself from thrashing around so she could let Purple Heart do her work.
Through the whole sexual act, the younger sister couldn't help but lift her head up to see a glimpse of Purple Heart's beautiful face. Despite being her sister, and the fact it was most likely her arousal feeding into things, Nepgear wanted nothing more than to grab her sister by the shoulders and give her the most passionate kiss either of them had ever known.
Purple Heart slowly moved her large breasts up and down Nepgear's pulsating cock. The warmth of it was enough to feel almost burning against her chest, but the Goddess was resolute to give her sister as much pleasure as possible.
Her sister's moans were like music to Purple Heart's ears, and she wanted to hear it even more. She opened her mouth and let a trail of saliva drip down onto the tip of Nepgear's penis, lubricating it so that her movements would be easier to do.
Nepgear let out a shaky, but pleasurable, breath when Purple Heart's saliva touched her tip, making it twitch in response as the slimy fluid made its way down her shaft where she soon felt it on the slide into the pillowy depths of Purple Heart's chest. Lubing the globes of flesh up that made the tit job ten times better than it already was.
The Candidate was no biting down on her lower lip, using every ounce of her willpower to keep herself from thrusting her cock upwards and fuck her sister's tits as if they were an orifice. Nepgear didn't quite get why she felt so aroused despite orgasming two times already, though, she didn't exactly have much room to complain about it given that it was making the tit job she was getting feel like a slice of heaven.
"Mmm, you're making some very cute faces, Nepgear~" Purple Heart purred as she gazed at her sister, smirking from how much she seemed to enjoy the treatment. She herself enjoyed teasing Nepgear, and she wanted to get as many cute reactions out of her sister as possible.
Purple Heart leaned her head down, flicking at Nepgear's penis with her tongue. She teased the tip with her slippy appendage, tasting the pre-cum that was leaking out as if it were the most delicious thing in the world.
"Aaaaah~!" Nepgear threw her head back and let out a cry of joy, her hips writhing around from Purple Heart lapping at her sensitive tip, letting out a surprised moan once she felt her sister take her tip into her mouth. The pleasure didn't end there, soon enough Purple Heart was back to work at pleasing her tip, swirling her tongue around the sensitive little head that drew more moans out of Nepgear. "N-Neptune~! O-Oh~!... Th-Th-That feels so... nnnngh... amazing~!"
Purple Heart kept up her attacks with her breasts and her mouth in tandem on Nepgear's cock. She had committed to pushing her breasts together and rubbing them up and down her shaft, while her tongue was dancing around her tip and swirling around in a rhythm.
The double pleasure assault on her cock left Nepgear a total horny mess. By now her moans were no longer soft and delicate, instead being completely raw and wanton, begging to have her load blown and blown hard. Luckily, it seemed that the Candidate soon got her wish, feeling her cock throb again as her third load of the day had started to build up within her hard dick.
Remembering what had happened earlier when Nepgear had orgasmed into her sister's mouth, she decided that this time she deserved proper warning for what was about to come. "N-Neptune! Y-Y-You're gonna make me... AH~! ...cum again!" The Candidate warned, thrashing her head back and forth trying to stave off her load to see whether her sister wished to swallow it or let it shoot off high into the air.
Purple Heart took the hint well enough, as she released her mouth from her sister's cock and reared her head back just enough so that her incoming orgasm wouldn't shoot inside her mouth. "Go on, Nepgear, cum as much as you want! You want to cum right between your big sister's tits, don't you~?"
Nepgear at this rate threw and and all patience out the window and was now actively humping the air, wanting to better fuck her sister's large shapely tits. "Y-Yes... I... DOOOOOOOO~!" The Candidate screamed, thrusting her hips upwards as far as she could while Purple Heart kept her little sister's hard dick in a vice grip with her tits.
Having answered Purple Heart's question already, Nepgear stopped trying to hold back her orgasm, now letting her cock throb madly before a thick stream of semen came launching out of the Candidate's penis. As the younger sister expected, her load ended up shooting pretty high into the air before it all came flying back down, coating some of her stomach and most of Purple Heart's tits in the warm white baby batter.
Before letting her head go limp and rest on the bed, Nepgear found enough strength within herself to lift her head up to take in the sight she had made before her. The radiant and noble Purple Heart, completely naked with her cock between her boobs while the large mammaries were coated in Nepgear's spunk. An uncharacteristic perverted grin found it's way to Nepgear's face, her cock, which was still rock hard, twitching from within the confines of it's soft fleshy prison before she finally let her head plop back down on the bed to rest as the Candidate took in deep breaths, reeling back along with basking in the afterglow of her orgasm.
"Mmm, that was so much...~"
Purple Heart smiled as she let go of Nepgear's rigid shaft, some of the spunk between her tits dripping down onto the bed below. She wiped some of it off with her fingers, before taking it into her mouth and sucking on her fingers as if it were nothing short of delicious. Nepgear saw what her sister was doing and blushed at the sight, all while Purple Heart winked at her.
When she was finished cleaning herself off, Purple Heart crawled up to Nepgear and gave her younger sister a passionate kiss. From the way she hovered, she felt Nepgear's dick poke against her stomach, and she didn't hesitate to gently stroke it with a single hand as she continued to make out with Nepgear.
Nepgear's eyes widened, not even thinking for a second that Purple Heart would be so bold as to make the first move to kiss her. Either way the Candidate didn't complain, instead just shrugging her shoulders and put her hand on the back of Purple Heart's head to bring her in even closer to the kiss while her moans were muffled by Purple Heart's supple lips as the goddess stroked her off.
With the passionate make out session going on, Nepgear started to move her hips around, managing to wring her dick out of Purple Heart's hand to start clumsily trying to aim it towards the Goddess's pussy. The Candidate had experienced the pleasure of her sister's mouth, hand, and now her tits, now she was carving her pussy more than anything.
Purple Heart eventually parted her lips from her sisters, a thick trail of saliva forming and breaking apart as they both panted and gasped for air. Their minds were both lost in complete lust for the other, and their pupils almost seemed to form hearts as they gazed into each others eyes.
But Purple Heart knew what her younger sister wanted, and so she sat back up. Nepgear watched with wide eyes as Purple Heart hovered over her cock, before she slowly lowered herself into the rigid shaft, performing a cowgirl position on her sister as she went all the way inside Purple Heart's pussy.
Any other form of pleasure was completely blown out of the water once Nepgear felt her hard cock enter Purple Heart's pussy, as cliché as it was to put it it felt simply divine, the CPUs warm inner walls rubbing against every inch of the Candidate's cock. Unlike with the previous acts, Nepgear didn't feel like she was about to cum within the first five seconds, she didn't complain about it though. After all it just meant she'd get to enjoy her sister's pussy for far longer.
"...N-Neptune... your pussy is so..." Nepgear couldn't finish her sentence, instead putting her hands on Purple Heart's hips where she started to hump against her subtly. "...I can't even describe it... it's the best thing ever~..."
"I'm glad you enjoy it~" Purple Heart said in a sensual tone, as she began to move her lower half up and down alongside Nepgear's shaft. She put her hands on Nepgear's shoulders, grunting as she slid along her sister's cock in a rhythmic fashion..
It felt as good for her as it did for Nepgear. Since now Purple Heart was getting a form of pleasure from the whole thing, the feeling of her sister's cock inside of her felt too good to put into words.
With Purple Heart leaning down to grab hold of her shoulders, it left the two sisters in a perfect position to stare lovingly into the other's eyes. Light purple meeting blue as Nepgear started to look at Purple Heart like a loving partner rather than a sister, deep in the back of her mind the Candidate she of course shouldn't be having feelings like this towards her sister.
Nepgear couldn't help it though, between the pleasure they were sharing with one another it was hard not to feel such a way towards Purple Heart, especially as the Candidate had such an unobstructed view of her face where she had her eyes half lidded in lust with a perverted grin on the CPUs face. All the factors only served to strengthen her feelings while Nepgear continued to plow into Purple Heart's pussy from below.
"Ah... Ahn~" Purple Heart moaned as she went up and down on Nepgear's dick, her own lust beginning to boil up within herself from the pounding she was getting. Her cheeks were bright red and her heart pounded against her chest as she started to get excited from the pure pleasure.
Nepgear was in much the same boat as Purple Heart was, feeling herself go absolutely while her cock continued to piston in and out of her sister's pussy while Purple Heart's inner walls continued to seize up around the Candidate's dick, giving the younger sister even more pleasure.
The Candidate's cock continued to twitch, even from inside her sister, from how much stimulation it was getting. Nepgear beginning to feel the familiar pressure just barely start to build within her hard rod while she continued to plow away at Purple Heart's pussy, making the room slowly degrade into a cacophony of sex noises ranging from the wanton moans of the two girls, to the smacking of flesh against flesh, and finally the wet slapping sounds whenever Nepgear fully hilted her cock inside her sister.
Purple Heart continued to grunt and groan as she bounced on Nepgear's dick, though she wanted to maximize her sister's pleasure as much as possible. With this in mind, she moved one of her hands down to Nepgear's pussy, and started putting her fingers inside of her slick entrance. The wetness made it very easy for Purple Heart to slide her fingers in and out of her sister, as she pumped away while she straddled her dick.
"AAAAH~!" Nepgear moaned out, her pussy quickly seizing up around Purple Heart's fingers, clearly not expecting to have that arena be given any attention. The Candidate wasn't at all opposed to it in the slightest, instead she relished in it, becoming far more wild in her movements, now starting to thrust into Purple Heart much more harshly while her orgasm in both her pussy and cock started to build up with each passing moment.
"Ha... ha...~" Purple Heart panted, a slick of drool coming out of her mouth from the amount of stimulation that hit her pussy every single time Nepgear thrusted inside of her. Her breasts bounced up and down as her body moved, her body glistening with sweat as the pressure building up inside of her reached a boiling point.
All the while, her fingers continued to assault Nepgear's pussy, never missing a beat and hitting all of her sister's sweet spots.
"O-Oh, N-Neptune~!" Nepgear moaned out, the double pleasure assault on both her genitals being too much for the Candidate to handle, feeling her orgasms building up more and more until it was too much to hold back.
With the way Purple Heart's pussy kept spasming and squeezing down on her cock, Nepgear knew her sister was close to her own orgasm. Knowing she had nothing to hold back anymore, the purple haired Candidate started thrusting much more wildly as best she could, though Purple Heart's fingers still pumping away in her folds made that a bit more difficult.
Nevertheless, it still had the same effect Nepgear wanted, within a matter of moments she had started to feel the pleasurable build up within her cock and pussy start to reach its peak. "N-N-Neptune! Y-Y-You're g-g-gonna make me... ah~!... c-cum again~!"
"D-Don't hold back, Nepgear. Cum as much as you want~" Purple Heart gently encouraged her, her body trembling and quaking as her sister ravaged her harder than she ever had before. She was on the brink of an orgasm, so she decided to make the end a little memorable. She leaned down and took her younger sister into a passionate kiss, closing her eyes as her canal erupted.
Purple Heart let loose an explosive orgasm that stained Nepgear's thighs and stomach, even coating the bed in her juices as she shivered. It was rare for her to have an orgasm so intensely, but when it was with her sister, for some reason the Goddess just let loose.
Once Purple Heart's supple lips were against her own, there was nothing stopping Nepgear from finally releasing all that had been building up within her while her sister rode her cock. Not wasting even a moment, Nepgear fully hilted herself inside Purple Heart then locked her legs around the CPUs waist while her dick throbbed and her pussy spasmed, her double orgasm finally wracking its way through the Candidate's body.
First her pussy shot out a stream of Nepgear's fluids, managing to hit Purple Heart's legs along with staining the sheets below her, that paled in comparison to how her cock handled it.
Nepgear's dick erupted inside her sister's pussy quickly, easily being by far the best orgasm she ever had, releasing load after load of hot white sperm inside her sister's womb with no signs of stopping anytime soon. Throughout the whole process Nepgear was happily moaning into Purple Heart's lips, feeling as all the lust that had been endlessly plaguing her for the past week start fading away with the more cum she shot into her sister that was beginning to overflow out of her and stain the bed sheets even more.
After about a minute of Nepgear cumming nonstop, her dick seemed to finally run dry. The fleshy appendage becoming soft and limp as it was pulled out of Purple Heart, the CPUs pussy leaking out copious amounts of her younger sister's sperm as the two finally separated from the kiss, taking in deep breaths while they basked in the afterglow of their orgasms.
"Hah... Hah... That was something else..."
In a flash of light, Purple Heart had turned back into Neptune and promptly collapsed next to Nepgear. Completely spent of her energy and covered in sweat, Neptune panted as she laid next to her younger sister.
Nepgear meanwhile just stared up at the ceiling for a moment, the seemingly never ending arousal that had been relentlessly bothering her for the past week finally subsiding, the Candidate now truly feeling sexually satisfied.
"...I-I-I'll... say..." Nepgear agreed, turning her head to the side to meet Neptune's gaze. "...th-thank... Thank you so much, Neptune... I... finally feel... like me again..." She thanked her sister between her deep breaths.
"No need to thank me, Nepgear. I'm just doing what a big sister should do.* Neptune said full of mirth, as she leaned and kissed the cheek. "I'd be happy to do it again, all ya need to do is ask~"
Nepgear's cheeks turned a tint of pink from the little act of affection despite what the two had just finished doing moments earlier. "...Th-Thank you, Neptune. It makes me happy to have a big sister like you."
With that said, the two Planeptune siblings relaxed in each other's embrace, neither of them planning to move from their beds for the rest of that evening.
"... We miiiight have to clean the sheets later, though."
"... Y-Yeah, we might…"