Chapter 6: Three is a Party

20 May (Saturday) 4pm

Nakano Residence

"Come in, Fuutarou," her voice buzzed through the intercom as he pushed the button to announce his arrival. Miku had requested for extra lessons that day– wait, why did he feel a sense of déjà vu?

"Oh, Nino, you're here too?" he exclaimed as the door opened, her twin-tailed sister standing behind her with folded arms.

"Why wouldn't I be?" the girl in question challenged with a grin, "It's our house, unless you were looking to have Miku all to yourself?"

"N-Nino," the sengotaku stammered, turning a little red.

"You two gonna stand there forever?" she chuckled, "I've just baked you some cookies, so come in and help yourselves."

They're safe for human consumption, right?

"Of course, who do you think I am? My little sister?"

Hnnngh, Miku pouted as she munched on the biscuits. Shrugging, he put his heavy bag aside and accepted his share, biting into the crumbs that were delicious as expected - at least when they were not made for canines or laced with other substances.

"Not bad," he complimented, washing down the final piece with a glass of milk. It made him feel warm and fuzzy inside, a sensation that was not unwelcome in the cool and empty apartment at the end of spring.

"Ichika and the others are out shopping," Nino explained with a shrug. "We can use my room if you like."

"I really wouldn't mind the dining–" he began as they headed for the stairs. Sighing, he quickly packed up and followed suit, walking past Miku who held the door open while her sister sat on her bed with the air of a queen awaiting her manservant. Leaning back with her legs crossed, her skirt seemed a little shorter than usual, her fair skin and shapely thighs juxtaposing against her stockings and dark–

Stop, Uesugi. Bad thoughts.

Grunting, he resisted the urge to stare as she smirked, amused by his reaction. Somehow, the temperature had risen in the past few seconds, and a trickle of perspiration had formed on his brow. The heat was getting to him, and he had no choice but to face her, if only to ask her to turn up the AC, and certainly not to steal a glance at her legs.

"Are you feeling hot, Miku?" she giggled as her sister locked up behind him, "Me neither. Maybe the milk was bad after all."

Wait, what?

"You were the only one who had it," her devilish smile widened. "Fufu, and you thought you could get away the first time without kissing my feet. I still haven't forgiven you, you know, for pulling my leg at the hotel."

Sorry, Nino-sama - I'm sure it can't be that easy, can it?

"Kneel," she commanded, pulling off a sock as her sister joined in with her tights. Before he knew it, he found himself on the floor as painted nails prodded his cheek. Gingerly, he took in her toe as she glared from above, relishing his submission as he ran his tongue between her digits. Soon, another pair of feet competed for affection, and he could feel the newcomer shudder as he bit down on the fabric.

"You want me to step on you?" the ojou grumbled, annoyed by the distraction. Shaking his head, he swiftly intensified his efforts, earning him but another minute of reprieve until she issued her next demand.

Pushing him to the ground, she straddled his chest to pin him in place as her sister brushed her toes between his legs. Trapped within his trousers and his briefs, he wondered if he was supposed to be pleasured or frustrated by the stimulation - before she gave him a sharp pinch and brought his hopes crashing down.

"You better not dirty your pants," she warned as she slipped a finger under her skirt to touch herself. A moist spot had formed on her black lace underwear, which only became wetter as she rubbed herself between the thighs, delighting in his state of helplessness. In that moment, she was in control, and she hastened her pace to that thought, nearly achieving a climax had she not caught him ogling her, enjoying the unfettered view of her panties without her permission. She promptly shoved her soles in his face to stop the detestable act, just as her sister pressed down on the growing bulge to put a halt to the rising tension.

"Didn't say you could watch," she snickered as Miku handed her a blindfold. "You had your fun with the others, surely some punishment won't hurt."

Seconds later, a finger entered his mouth, followed by another, before clamping down on his tongue as moist lips proceeded to slide over his own. He could tell that it was Nino when he heard her moan, her trimmed folds tickling his nose as she smothered him, drooling between her legs. She made him lick her like a dog, even as it only served to make her wetter, sweat and nectar trailing carelessly onto his chin, until she peaked in the roiling tides, culminating on the shore in a burst of ecstasy.

Fortunately, she did not continue, granting him a brief respite from the storm. Inhaling, he filled his lungs with precious air, knowing that it could be in short supply until she was truly done with him. Thus, he was surprised when she released him from her grasp, unsure if he should celebrate his freedom or dread another tempest.

"Relax," an angelic voice assured as he exhaled in relief. "It's my turn now. I'll try to be gentle–"

Oh, it's you, Miku. You nearly gave me a scare there.

"–not."

Et tu? Thou hast been forsaken! Halp, Nino-sama, use your powers to rein in your little sis–

"Fuutarou," came the order as she threw him a cloth. "Wipe your face before we start. Wouldn't want Nino's fluids on me, it's weird."

"M-Miku, you didn't have to put it that way!"

"Would you want to clean up after me then, Nino?"

"I-I'd rather swallow– urgh, what am I even saying!"

As they bickered, he dried himself with the towel - which would have been the case, even if he had not been asked to do so. He took the opportunity to take in a few extra breaths before the sengotaku dug her fingers into his hair and brought him between her thighs. As informed by their first encounter, she could be rougher than her sister, and unfortunately for the young man, she was in the mood to visit the mountains in the summer. Riding him like her stead, she groaned as she ascended the snowy plains, the path becoming progressively narrower the higher she climbed. She held on tight, not wanting to fall off the cliff like the last time she had been denied, until she could almost see the stars in the sky as she moaned mindlessly at the ceiling, her back arched as all the muscles in her body tensed at the same time.

"Fuutarou," she gasped as she struggled to steady herself, nearly disintegrating in the aftershock. Soaked in perspiration, she removed her cardigan and pulled on a new pair of pants before taking off his blindfold as a reward.

"That's all for today," Nino took over as he blinked in the light. "Why, were you expecting more? Can't we have our fun without you making a mess?"

"Heh, that was anticlimactic but let's get back to studying," he remarked, partly serious and partly in jest.

"Uesugi, at least look more disappointed!" she lamented. "Come on, it's the weekend, I would've loved to see you beg but I'm feeling somewhat generous today."

"I won't say no," he laughed as she clenched her fist. "Especially when you're the one asking."

"Gah, whatever, just make sure you do a good job," she huffed, peeling off her skirt to reveal moist, pink lips craving to be filled. Miku was already on the bed, her shorts hanging by the chair, her fingers reaching between her legs to stave off the heat.

"I'll let you in without protection this round, but don't you dare finish in me," she warned as he nodded. "I'm already wet, just take off your clothes and–"

Her eyes went wide as he entered her from behind, his skin rubbing against hers for the first time. She was soft and tight, just as he had imagined, and the contact was intimate as it was electrifying, sending waves of mutual pleasure down their spines. She quivered as he quickened his pace, plunging faster and deeper into her as she lay on the bed, latching on to a pouting Miku who had stopped her ministrations amidst her discontent.

It was indeed the envy that she had wanted to see, and she smiled mischievously as she kept her eyes on her younger sister, watching her jealousy simmer as she moaned atop her until she crumbled in a screaming climax. Her spray stained the sheets and drenched the carpet as he held in the pressure, only pulling out when her thirsty walls had stopped squeezing on his erect stick, desiring the forbidden end that she had earlier sought to deny.

"Not fair," Miku protested, flipping her sister over and pinning her down, making full use of her moment of weakness to turn the tables and reverse their positions. Before the latter could react, she had clamped the dog collar over her neck, sealing her dominance with a chain which she rattled tauntingly in her face to show her who was Master.

"You like being treated this way, don't you?" she cooed, noting the juices that had begun to dribble down her thighs. "You act all high and mighty because you want someone else to do the same to you. Now, at least have the decency to clean up after yourself, Nino."

She obliged, turning red as she swallowed his member which was dripping in her fluids. Under her mistress' watchful eye, she licked every inch of his rod, ensuring that it was free of her filth, before her sister stripped her bare and tied her to the bedpost, allowing her to have a front-row seat to the show that was about to unfold.

"Didn't say you could stop," Miku hissed as moisture continued to flow down her legs. "You wet the blanket. Lap it up and maybe I'll allow you to play with yourself."

Like an obedient puppy, she did as she was instructed, while Miku took off her top and brought his hands to her chest. Wiping him off once more, she let him enter her as she made herself comfortable on the sheets, hugging and caressing him as if she owned the bed. Unlike Nino's turn when they had traded glares, she did not spare a glance at her sister, simply ignoring her as if she did not exist, which was arguably a worse form of revenge. Her eyes were reserved only for the man who was pounding her silly, her innocent, doe-like gaze meeting his amidst the sensual eroticism and intimacy, until she shattered in a guttural groan, the flame in her stomach spreading across every fibre of her being as she came in a puddle between her legs.

That was when she finally turned to acknowledge her sister, watching as she fingered herself to no avail, on the verge of tears yet strangely addicted to the humiliation and degradation. Patting her head in mock sympathy, she proceeded to get on her knees to lick him off, savouring the taste that was truly her own. High on enthusiasm and euphoria, she increased her speed and added her hands to the repertoire, pushing him to finish in her mouth, seeking to end her role-play and return to a reality where she was truly shy and demure.

He came to her motions, filling her with the bittersweet foam that he had been holding in for the past half hour. Satisfied, she licked her lips and wiped the residue off with the back of her hand. Standing over Nino, she let the mixture drip onto her sister's face, allowing some to settle on her tongue to give her a much-awaited taste. With that, the puppy finally came, her juices staining the fingers stuffed between her thighs that were yearning for so much more that she did not immediately bound for freedom even when she was unchained, keeping the collar on as she shooed them both out of her room to enjoy the solo encore.

"That was interesting," he commented as they headed for the bath together, walking down the corridor naked as if it did not matter.

"I just wanted to get back at her, but I think she really liked it," she stammered, reverting to her usual demeanour. "You know I'm totally not like that–"

"Not gonna judge either way," he grinned, ruffling her locks. "So long as you enjoyed it."

"I-I guess I kinda did," she admitted, turning bright pink. "But I'd still prefer if you were in charge."

"You always say that."

Laughing, he took her hand and led her to the shower, where they continued to make out before they were joined by her exhausted sibling, which they helped to massage back to life. To be fair, she let him satiate her while she watched patiently, stimulating her sore lips gently until she came in his warm embrace. In the serene silence, the elder sister clung on to him, indulging in the tender, loving care, which the sengotaku did not disturb except to wrap her own arms around them in a comforting hug.

For a good few minutes, they remained in the tub, cuddling each other in the afterglow before rinsing off the soap, tired but contented. Having left their clothes in Nino's room, they each donned a towel for the short walk back to keep out the cold–

"What's for dinner, Nino?" he nearly jumped as he opened the door. "I'm starving but the table is empty!"

"Shishishishi, wanna play a game while we wait, Miku?" another one piped in.

"Ara, Fuutarou-kun," the final voice spoke as he saw the gleam in her eyes. "Make sure you come by tomorrow."

A/N: References to Nino and Miku's respective Summer Vacation choices (sea vs mountain) in Chapter 90 of the manga (Quintuplets Flashback arc).

Gotta love dom-Miku (sub-Nino is fun, but it's been explored extensively in other works). We're nearing the end, so I'll be turning up the heat in the final bonus chapter. As always, favs/follows/reviews highly appreciated - I'd be glad to hear from my readers if I'm doing lemons right, and where I can improve moving forward.

P/S: For those who follow my other works, I've decided to take a break from The End of the World is Wrong as Expected (Oregairu AU) (A/N posted in the updated Chapter 5). I'll be focusing on the ongoing Blessings on This Floating Castle (Konosuba x SAO) and The Holy Grail War of Chiba (Oregairu x Fate). In the meantime, feel free to check out my earlier completed post-apocalyptic crossover Reality Offline (SAO x Oregairu AU).