Maria never once fathomed that she would be the lonely one of the pair on Valentine’s Day, but then again, she’d always been able to look at her brother as an example.
When it came to that time of year, she was the one more likely to be fending off suitors or telling boys that she wasn’t interested, but as they’d grown older and come into their own, Mako stopped having such a problem, and Maria, for better or worse, was learning how it felt to be in need of a little company on the most romantic day of the year.
Thanks to that, and her own pettiness when they were younger, there was more than a little shame on her knuckles as they rapped across her brother’s door that evening.
“Please open up, Mako…”
She tried to keep that whisper hidden, but she couldn’t keep it from passing over her lips. She didn’t imagine that he heard a word of it, but she couldn’t help a hint of bashfulness spreading about her expression as she heard footsteps coming toward the door.
“…Huh. You’re the last person I expected to see on a night like this, Maria. Don’t you have somewhere to be right now?”
She cocked a brow. “What’s that supposed to mean?”
“I just figured you’d be digging yourself out of a pile of cards right now,” Mako explained. “I won’t deny that the company is a nice surprise, though!”
“Oh! H…heh. Yeah. I guess I should be doing that right now, but there weren’t quite as many as I was expecting,” she admitted. “In fact, there…there was only one or two, really.”
She couldn’t bring herself to admit that she hadn’t seen a single card in her mailbox all day, even to someone that she trusted as much as Mako. She didn’t dare to show that kind of weakness on his welcoming her inside, either; she didn’t want to ruin his evening by unloading on him.
“Still more than I got,” Mako confessed, but his disposition remained cheerful as Maria stepped inside his home. “You’re just in time for a little after dinner wine…or some leftovers, if you didn’t already eat?”
“That’s very sweet,” she replied with a forced smile. “But no thank you, Mako. I ate before I came over.”
Mako closed the front door behind her and tried to keep his expression neutral, but he couldn’t help a shift in his stare: he knew something was wrong with his sister, even if she wasn’t coming right out with it.
“Well, I’m more than happy to share a glass with you, at least,” he offered. “Not to pry too much, but did you just feel like dropping in? Usually you give me a call or text me before you come over.”
She knew what he was getting at, before he asked the actual question. “What? I’m not allowed to pay my big brother a visit from time to time?”
“Maria…”
“I’m just asking!”
“Mmhm,” he replied simply. “And I’m just asking if something happened to you, because you’re acting a little funny.”
She couldn’t deny that much, but she still crossed her arms over her chest and tried to turn the tables back on him. “And you’re being a little ungrateful for the free company, aren’t you?”
Mako smirked. “Is that what this is about? Feeling lonely on Valentine’s Day, so you decided to drop in on me?”
“N…No, I…hmph. So what if that is the case?”
It would have been too easy for Mako to tease her about such a predicament, but her brother had grown up to be a kind and gracious man: the kind of person that she was honored and happy to be related to.
She knew she could confide in him in such an isolated moment, with only the mildest teasing before he opened his heart and home to her.
“Then you should have just said so from the start,” Mako assured her. “Come in, take a seat, and let me pour you a glass of wine; we can have our own little Valentine’s right here in the living room.”
Her demeanor perked up just enough for Mako to notice the change. “You’re sure I’m not a bother, Mako?”
“Not in the slightest,” he said. “Who knows how to make you smile better than your older brother, hm?”
“Good point,” she agreed, finally letting out a quiet giggle. “And who would you rather spend time with on a day like this than your little sister?”
It was a bit of a loaded, awkward question: Mako knew she was upset, but he didn’t think she understood the implications of what she’d asked him.
“I…uh. Uhm…also a good point?” he said, trying to decide if that was the right way to answer what could have been quite a taboo inquiry.
That was just what she was going for, and on some level, Mako knew it…but he was still bashful at the prospect, and it was only made worse by the narrowing of Maria’s eyes as he brought her the promised glass of wine.
“Not like some floozy that you picked up off the street is gonna know what you like better than I do,” Maria bragged. “And I don’t think they’d appreciate you as much as I do, either.”
Mako smiled, but the expression went past grateful and became slightly nervous as he watched Maria’s tongue dip into the wine glass before she actually took a sip. She made sure he caught sight of the profane gesture before tilted her head back; it left Mako so flustered that he had to swallow back a lump of nerves.
“I’m…r-really glad that you’re so appreciative,” he answered. An uneasy chuckle escaped his lips, but even as it did, he saw Maria rushing through the contents of her wine glass in a few eager gulps.
There were quite a few other things that she wanted to wrap her lips around instead, and she was done waiting for them to present themselves.
“I sure hope you don’t mind if I show that appreciation with more than some flowery words,” Maria whispered, but she knew he’d be listening just close enough to catch that. “And if you do mind, I may have to remind you of a promise that you made.”
Mako already knew where she was going with her statement, but he wouldn’t be able to stop her from recanting the story. “Maria, we were kids when we made that promise! It’s not the kind of thing that you can just do as adults!”
“You promised me that if I ever had to spend a Valentine’s Day alone, you would fill in for my would-be boyfriend or husband,” Maria cut in as quick as she could. “And I’m here to collect on that promise, brother.”
“If you really want me to run out and get you some flowers and chocolate that badly-
“I’d rather you give me some rugburn and a good, hard fuck,” she interrupted. He’d half expected her to make a lewd remark, but he didn’t think she’d jump into the conversation with such aggression…or that she’d go even further with her actions. “But…go ahead and pretend that you’re not interested.”
It wasn’t the first time that the pair of feline siblings dared to cross the incestuous line, but for Maria to approach the topic with so much intensity was catching Mako off guard. He was barely able to set his wine on an end table before Maria pressed her chest into his own, and her wine glass was discarded as she dropped her paw to his backside and squeezed it fiercely.
She could have taken him anytime that she desired, but she wanted to give him a chance to take the lead, since she was a guest in his house. 
He’d missed that chance, and now, they were going to do a forbidden Valentine’s Day her way.
“You know I can’t lie to you, Maria.”
His voice was hesitant to give away such a truth, but he wasn’t saying anything she didn’t know. He had a feeling this was what she’d go for the moment she showed up at his place, and though he was eager to be right about it, he was still shy that he had such a soft spot for his sister…especially one that was so highly frowned upon.
With a glass of wine in her system and the disappointment of a lonely day behind her, Maria didn’t much care what anyone else would have to say. They had the privacy of Mako’s living room, and that was enough for her to move her curious paw from his backside to his crotch, all while her eyes stayed locked on his, daring him to try and stop her.
Her soft, golden orbs twinkled with mischief as Mako’s crystal blues gave one last effort of resistance; it was pitiful, at best, and those eyes rolled back as Maria squeezed his covered bulge and worked it through his jeans.
“All you have to do is say you wanna fuck me,” Maria told him. Her voice traveled so delicately over his ears that he felt ethereal fingers tapping along the velvet of his earlobes, and as they twitched, sensuality overtook her tone completely. “And I’ll pin you down right here and now, brother…I’ll make sure you never feel lonely on Valentine’s Day ever again.”
The love they felt for each other always went a step beyond the familial relation that they shared, but until the last holiday season, they’d never allowed themselves to act on it in such a heavy way.
Now that the seal was broken, it seemed that Maria wasn’t going to get her fill of her brother anytime soon…and his hesitance was driving her wild.
“This was s-supposed to be a one-time thing, Maria!” he reminded her, trying to sound as though he could resist her touch; they both knew he was stalling. “If I’d known, I-
“Would have fucked me a lot sooner?” she teased, cutting him off once more. “That’s okay, Mako. I forgive you for taking so long…and you can make it up to me by putting those paws to good use.”
He could have tried to keep arguing with his sister, but he wasn’t foolish enough to argue with a good thing for so long. He was trembling nervously, but at her urgings, he couldn’t help letting those paws come to rest on her hips…but she leaned right up into him, forcing his palms over the curve of her ass.
He'd never seen her act so aggressively, but she was winning him over, no matter how hard he tried to resist.
“Maria…I, w-we…”
Mako trailed off as his eyes lidded partially, still enamored with the lustful gaze Maria shared with him. He couldn’t break away from her stare, and the closer she moved, the warmer he felt, until the heat of her tender, delicate lips finally reached his own.
A myriad of subtle flavors hit him all at once, as the taste of her lip gloss mingled with her natural flesh. Upon the whole arrangement was the soft touch of their wine, and just when he’d come to appreciate the complexity, he felt greater pressure from Maria’s powerful advance.
The kiss would have been more than siblings should have exchanged to start, but as she stepped in, Mako felt the careful weight of her muzzle against his own, the brush of her thighs against his covered bulge, and the subtle press of her breasts upon his torso…complete with the ticklish stiffening of her nipples through her top.
He already knew how Maria felt about him, but Mako was still completely bewildered at the way she’d thrown herself at him…and he just couldn’t resist her anymore.
With his lips trapped by her fiery approach, Mako finally pressed back into the passionate kiss, trying to match his sister’s intensity. Her tail curled with delight when she realized he was giving in to her wiles, and from the back of her throat, a quiet purr escaped, providing the most delicate vibration to their already pleasurable kiss.
Feeling the growing stiffness of his cock against her inner thigh, even through his pants, Maria knew she’d finally snared him in her web of lust.
Her patience had paid off: she went right for the zipper, tugging it down and pushing blinding at his pants. She could feel them moving down his legs, but now that Mako was on board with their forbidden tryst, he was squeezing her backside tight, forcing her to divide her attention between enjoying the grope of her supple flesh, and the pulse of his bare cock as her fingers unearthed it.
Feeling that intimate warmth in her grasp, she couldn’t help giving a curious stroke, and in the next moment, precum spilled into her palm, lubricating it for a further touch…but there was no need for something so subtle anymore.
“On your back,” she whispered into his lips, right as she felt his own suckling at her flesh and deepening the kiss. “Don’t keep me waiting.”
Mako hadn’t tasted enough of the sweet, delicate blend of nectars that her lips had come to offer him, but he was forced to take a break as Maria pushed at his hips. Knowing the stakes, fell back and let his pants drop around his ankles as he went down to his back…and from the floor, his sister gazed upon him with a lust that he’d never seen in her before.
Her eyes stayed on his, captivating him through every step of the evening as she lowered the shoulders of the brilliant, red dress that she’d picked for Valentine’s Day. She was saving the surprise for whoever her date would be that day: that it was her brother who got to see the surprise of nothing beneath the dress, save for the fur she was born with…that wasn’t exactly what she’d planned, but she was wetter than she imagined she would be when her thighs came apart with her first step.
Blinking in disbelief at the moisture on her petals, Mako watched breathlessly at his sister’s advance. She closed the gap between them easily and stepped out of the puddle of her dress, leaving it on the floor behind her. She dropped right to her knees, right into Mako’s lap, without bothering to kick his pants off the rest of the way or strip him of his shirt.
She was aching with need; such details weren’t as important as the penetration that she longed for, and the fulfilling connection that only her brother’s cock would offer.
“Are we…a-are we really doing this again?” Mako finally asked, as Maria leaned her ass back into her brother’s twitching length. His precum soaked the underside of her tail, but the spill only drew an affectionate, lustful grin from his sister, as new eagerness filled her eyes.
His words weren’t frustrated, or even disbelieving: Mako was simply amazed that Maria would trust him with this kind of connection ever again, but she made it clear how much she did as she reached back and held the base of his length.
His smooth, slick tip eased right past her soaking folds, penetrating her with delightful ease. Wincing at his impressive size, she slowly rocked her hips back toward the seat of his lap, until she was upright and staring down at her lucky sibling.
“I didn’t know there was a limit to how many times you’d let me take you,” Maria teased. “If that’s the case, I’d better drain you dry, Mako…because you’re mine tonight.”
On one hand, Mako always dreamed of the day that a woman would treat his seed as a gift…even one that was worthy to give as a Valentine.
That it was his sister might have been wrong to the rest of the world, but he couldn’t possibly care about that in the heat and moisture of the moment. Her inner walls were completely swallowing up his length, and as she rolled back, she took the entirety of her brother’s warm, pulsing cock, complete with the messy squelching of their mingled juices as she settled in his lap.
For a moment, the gravity of their forbidden bond was too much for either one of them, but as Maria sat upon her brother and stared at him, they panted quietly, embracing how much pleasure they could offer each other when no one else was there for them.
It was Mako who acted first, catching Maria by surprise as he reached up and took a breast in each paw, squeezing them with gentle affection.
“Enjoy your gift, sis…”
She was the one left breathless, as his fingertips tweaked around her tender nipples and left them aching for a further touch. Holding her chest as she began to bounce, Mako felt closer to Maria than he ever had before, and in that moment, he wondered if she even cared about their previous connection as siblings.
The way she bounced upon his shaft, as her hips worked out all of her sexual frustration, he saw her as a woman, first…and a woman that was deserving of his love, at that.
“Couldn’t have a-asked for a better one, brother…”
As she tripped over her words and stammered through her moans, Maria forced her inner walls to clench and tease her lucky brother, treating him to the best ride that she could possibly manage; her guilt about interrupting his evening was left behind, replaced with pure and unadulterated lust for the man she’d claimed. His tool was hers alone that night, and as the pace picked up, she left his cock utterly soaked with the juices of her liquid desire.
That glistening rod began to twitch with new life as the minutes passed, and finally, an eager Maria leaned forth and pressed herself fully into her brother once more. Her ass lifted and her hips began to slam down on him rapidly, working him for every single drop of cum he could possibly offer her.
“Did…d-did you know I was close?” Mako asked, panting heavily at the quickly building pleasure. “You know I can’t take that…t-that…feels so f-fucking good, Maria!”
“Damn right it does,” she answered with an arrogant grin, but her expression faltered at that, as her brother’s tip reached her g-spot and pressed into it; the weight of it was relentless as she pounded him into the living room floor, and right as his full, creamy load began pouring into her passage, she offered an extra, velvety wetness to his rod, blessing him with her own orgasm. “It’s the…t-the best Valentine I’ve ever gotten, Mako! Yes!”
Fluttering inner walls finally held around Mako as Maria bounced all the way down on his length a final time. He was going to sing her praises to the ceiling, but as she came in close, she stole away his breath with another kiss and held still on him, enjoying the deep, powerful throb of his release.
Deep inside, his cum reached all the way up to her womb and filled her body with delicious warmth, more than anyone else had ever managed before. She could feel his orbs twitching against the smooth fur of her backside as she rested there, and against his lips, she giggled at the ticklish delight…but she refused to break the gesture.
Once they were done, she’d let Mako speak his piece, but right then, she was too busy accepting the bulk of his ‘gift…and there was a lot of it to take.