Circadian Rhythm
Pairing: Sentry/Bob/Robert Reynolds/The Void x Thunderbolts!Fem!Reader!
Summary: Any time Sentry surfaces he is practically attached to you because he wants to spend every waking moment in your presence.
Warnings: 18+ Minors DNI! Smut, Fluff, Angst (just a hint here or there), Sentry is super clingy and possessive over you, Sentry is a softie and the definition of a golden retriever here.
Smut Warnings: Cockwarming (unprotected), Mutual Masturbation (handjob, fingering), Spit, Breast Play, Praise Kink, Sucking, Biting and Marking Readers Skin , Sentry is extremely touchy, Sensual Sex Acts
Author’s Note: I love writing clingy Sentry with anger issues lol, such a fun version. I hope y’all enjoy the double Sentry update today <3 I really missed writing for him.
Word Count: 3,623
”God, look at those two,” Yelena muttered, low and incredulous, leaning towards Bucky as she tilted her chin at the couch.
From where they stood, you were barely visible at all. Sentry’s enormous frame was plastered across you, so broad and heavy that he looked like he had deliberately smothered every inch of your smaller body beneath his own. If it weren’t for the faint glimpse of your calves hooked around the backs of his thighs, or your hand that was resting on his back and the one tangled in his hair, they might not have noticed you at all.
Sentry’s face was mashed against your chest, his nose and mouth buried so deeply into you that it looked like he was trying to suffocate himself in you. His eyes were closed, lashes brushing faintly against the thin fabric of your shirt like he was experiencing REM sleep, but the careful rhythm of his breathing gave him away that he wasn’t really asleep. Each inhale was too purposeful, dragging in the sweetness of you, savouring it in his lungs, while each exhale came hot and heavy against your sternum, pooling warmth into your skin like he was trying to mark you with the air.
To him, you always smelled like summer–sweet and ripe, like a field of berries warmed under sunlight, with the faint freshness of the leaves that surrounded them. It clung to you no matter what you did, whether you had just returned from a mission or slipped out of the shower. The scent was always there, lodged in his senses, something that never truly faded from his mind. And right now, with his nose pressed tight into you, he was drowning in it, consuming every breath like he would starve if he didn’t.
Your calves curled tighter around him, legs bracketing his torso, holding him down as though you had been carved into the perfect mattress just for his body alone. You hand moved through his soft, light-brown hair, twirling the strands until they curled into loose ringlets before smoothing them loose again. Then, with deliberate care, you gripped gently at the roots, kneading into his scalp. Your nails grazed the crown of his head, dragging over the most sensitive spot you had long since mapped. He exhaled on cue, his breath synching with the motion of your hand, as though his body itself attuned to you and the affection you gave him.
The vibration that rolled through his chest resonated into yours–low and steady almost like a purr. And with it, the air around the both of you shifted. The pen on the coffee table rose lazily, hovering an inch before clattering back down when your hand stilled. The corner of the blanket lifted, as if tugged by an unseen wind, before falling flat again. Even Walker’s half-empty glass in the kitchen drifted faintly before setting back down with a sharp clink on the counter. The world bent subtly with every pass of your finger through his hair and over his back, and only righted itself when you paused.
This was his ritual when he surfaced, and the team knew it well by now, but witnessing it was always a sight to behold. Sentry was a god who could obliterate the Avengers, and sit on the surface of the sun without obtaining a single burn, but he was always reduced to this–curling into you, smothering himself against your chest, desperate for your touch like it was the only thing that kept him tethered to the surface. You had explained–more than once–that your heartbeat grounded him, that your warmth and touch neutralized the chaos inside him, and steadied him when nothing else could. But the others never really listened. They saw only the softness. The submission of a God to his mortal lover, seeking safe haven within your skin.
Regardless of what they saw though, they knew not to test him. Because when Sentry was present, he was possessive. Always attached. Always trailing after you like a golden shadow, taking hand squeezes and forehead kisses as if they were his only source of oxygen. God forbid anyone dared ask something of you while he was around, because even if you agreed, he would bristle instantly, pointing out how others could take the task instead, and demanding repayment for the lost time in some way. It hadn’t taken long for the team to learn that it was better to let him have you uninterrupted than risk what might happen otherwise.
Now, he shoved his arms under your back, hauling you closer, pressing his nose harder into your sternum until a dull ache spread through your chest. He whispered something there, muffled against your shirt, something you couldn’t make out as his hot breath seared through the fabric.
”Sen…Baby…” You cooed breathlessly, stroking your hand down his back in tandem with the rhythm of your nails dragging though his hair, “Take it easy…I’m not going anywhere.”
”Want you closer though…” He grumbled, his voice vibrating into your chest, a sound both petulant and needy.
You parted your lips to answer him, but Walker’s voice cut across the room like a blunt blade.
”How about you two go to your bedroom if you wanna get closer? You’re hogging the main couch, and it’s getting really annoying,” He said, strolling out of the kitchen with a bowl of chips, crunching loudly, oblivious–or maybe deliberately baiting for a reaction. You shot him a glare sharp enough to draw blood, shaking your head in warning, but Sentry was already moving.
His head lifted from your chest, golden eyes snapping open. The light inside them blazed, molten and alive, embers of orange and gold swirling until they lit the entire room in their glow. His voice followed, booming, the sound thrumming deep through the floorboards.
”You know what, Walker? How about you shove–“
”Hey.” You interrupted.
Your clammy palm caught his cheek before he could finish, and his face turned back toward you, his voice choking off instantly. His chest heaved, the storm in his gaze flickering brightly, then dimming as you brought the other hand up to cradle his cheeks between your hands, cupping his face like you’d caught the sun itself and bent it to your will. He closed his eyes tightly, releasing a heavy huff of air, his body sagging into your touch.
”Sentry. He’s right…We should go to our room. It’ll be easier to get closer there, and we’ll have privacy. No one will bother us. Right guys?” You asked, your voice steady and stern, casting a glare over your shoulder at the onlookers who had varying levels of surprise on their faces. Yelena and Bucky nodded quickly at you, muttering ‘yeah’ in overlapping tones, and Walker grunted something through a mouthful of chips, but didn’t press further.
When you looked back at Sentry, his head was bowed, and the blaze of gold shuttered as though ashamed. He sighed, the sound being dragged from his chest reluctantly.
”Okay…” He murmured at last, voice soft, acquiescent.
He reluctantly pulled himself from you, the warmth bleeding from your skin where he had pressed. But before you could rise to follow him, he scooped you up in one fluid motion. You wrapped your arms around his neck instinctively, your legs winding around his waist.
As he carried you down the hall, you rested your chin on his shoulder, glancing at the others. You mouthed ‘sorry,’ and they nodded silently, shrinking from view as Sentry’s steady steps took you further away from them.
Being carried by him always felt strange: weightless, dizzying, like the plummet of a rollercoaster where gravity gave out for just a second. Your stomach would swoop, and your body tingled with numbness, but you had grown used to it. You chalked it up to the world rearranging itself again–because when he held you, it seemed as though even gravity bent with the both of you.
He nudged the bedroom door open with his shoulder and slipped inside, kicking it shut behind him with the heel of his foot. It only took him a few seconds to make it to your shared bed, laying you down only for him to immediately follow, sprawling sideways across the bed until you seamlessly shifted back into the same position you were in when you were on the couch, limbs tangling together like you had never left.
A ragged sigh spilled from him, heavy with relief, as he shifted, sliding his arms beneath your shirt, his palms spreading wide as they traced the line of your spine. His fingertips catching the smooth skin, feeling the beauty marks that were scattered over. He shoved his face back against your chest, lips brushing the swell of your breast through the thin fabric as he murmured:
“I think for once…Walker was actually right.” You stroked his hair, wrapping your arms around his neck.
”And you were going to explode on him,” You whispered. He huffed a small laugh, his breath hot against the fabric near his mouth.
”I only did that because I felt like we were being judged…You know I wasn’t going to harm him.” He stated softly.
”That’s not what your eyes were telling me,” You murmured, brushing your nose against the crown of his head, breathing in the faint scent of his peppermint shampoo. His hair tickled the bridge of your nose as you pressed closer. He shifted against you, fingertips trailing lazy circles up and down the length of your back, each delicate pass raising a new shiver, coaxing goosebumps in its wake.
“That was just an intimidation tactic.” His tone tried for lightness, brushing it off, but the edge of guilt softened the sound. You pulled back slightly, just enough so that his gaze found yours in the dim room. His eyes burned faintly with their molten orange-gold light, reflecting your face like a flame caught in a darkened window, as the glow softened when his features turned vulnerable.
”You’re not an animal, Sentry,” You whispered, your hand sliding up to curl against the strong line of his jaw, your thumb brushing beneath his eye, where the embers flickered brightest, shimmering as though your touch stirred them, “You’re a god. They already tiptoe around you as it is…You don’t have to intimate them more. I want them to see this side of you–the gentle side. The side that loves me. Not the one that tries to play tug-of-war with them because they asked me to leave you for a second and you didn’t like it.” His lashes fluttered closed at your words, his head tilting instinctively into your palm. His cheek pressed harder into your touch, nuzzling as if trying to melt into your skin.
“…I know,” He admitted quietly, his voice reverberating against your palm. “And I’m sorry that I haven’t been…Nice to them. They mean a lot to you. They should mean a lot to me too.” Your chest softened. You leaned forward until your forehead pressed against his, your lips brushing against his nose in a fleeting kiss.
“You don’t have to apologize, Sen. I just want everyone to get along.” His eyes opened at that, molten and earnest, his breath spilling hot across your lips.
“I’ll try my best to refrain from causing any more trouble… and I’ll right my wrongs.” The vow vibrated in the air, steady as a promise carved into stone. You smiled against his cheek, rubbing your palm softly along his skin. He drew in a deep breath, chest pressing closer to yours, and then whispered, almost pleading: “But for now…Can we just focus on this?”
His hands pressed more firmly to your bare back, pulling you flush against him. Your body slid against his broad chest, warmth sealing you both together like a second skin.
“Okay,” You breathed, and closed the distance.
Your lips brushed his with a gentleness that made him shiver–sweet, slow, and coaxing. His mouth was soft and trembling at first, pliant beneath yours. The kiss tasted faintly of wintergreen toothpaste and you, the mixture dizzying in its simplicity. But then his restraint faltered. He leaned into you, lips parting, catching your lower lip with the faintest pull of his teeth. Heat poured between you in an instant, deepening until you gasped softly into his mouth.
A sound rumbled out of him–half moan, half growl–spurred by your response. His hand slipped from your spine, gliding around to your front, his palm flattening over your breast with a reverence that made your body ache. He squeezed gently, thumb brushing over your nipple, teasing the sensitive bud until it hardened and your lips parted with a little sigh.
The sound spurred him. He kissed you harder, deeper, his tongue sliding past your lips to tangle with yours in a hot, messy rhythm. Your fingers slipped from his cheek, curling your arm around his shoulders, dragging him closer. Every scrape of your nails into the fabric of his sweater, every tug closer, pulled a deeper groan from him.
His hips shifted, tilting upward until the semi-hard ridge of his cock pressed against the buttery-soft fabric of your shorts–right on the heated center of your core. The contact sent a rush of warmth spiralling through you, settling deep in your stomach.
“Do you still want to be close to me?” He asked hoarsely, pulling back just far enough to ghost his lips over yours, his tongue darting out to flick teasingly at your bottom lip. His hand continued its slow massage of your breast, squeezing the soft tissue, his thumb circling your nipple again until your back arched into his touch.
“Of course I do,” You whispered breathlessly, pressing your mouth back to his in a kiss that was softer and unhurried. You took control of the pace, drawing him in with each deliberate press of your lips, every tilt of your head pulling him deeper, making him chase the pressure a little bit without rushing.
Your arm wound tighter around his shoulders, anchoring him closer, making sure that every ounce of your body displayed the truth of your words to him. His fingers dug into the small of your back, returning the favour, his palm at your breast kneading a little rougher now, just enough to make you gasp against his lips before you pulled away, pressing your foreheads together again, your mouths hovering in the shared warmth of your breaths.
”I know how we can get even closer,” You teased, voice low, almost a purr, feeling him let out a shaky breath.
Your free hand slid down the front of his sweater, savouring the smoothness of the fabric over the hard ridges of his abs, until you reached the waistband of his sweatpants. Your fingertips lingered right at the edge of it, teasing lightly, tugging at the untied strings that dangled there. You felt the hitch in his breath, the shiver that trembled through him, before his golden eyes met yours again, glowing brighter, swirling and boiling with need.
“Want me to show you?” You asked, as your thumb traced along the inside of his waistband. His eyes flared again, and he nodded quickly.
”Please.” He replied hoarsely.
Your lips curled in a knowing smile, and you slid your other hand down to join the first, tugging at the waistband with deliberate slowness. He got the message instantly, separating from you just enough to shove them off, the fabric whispering over his thighs. At the same time, you hooked your thumbs beneath your shorts, easing them down your legs along with your panties until you were bare to him.
He froze when he realized, chest rising and falling hard, eyes locked hungrily on you. In answer, he peeled his boxer briefs down in one quick movement, tossing them aside before sinking back down onto his side, and facing you again. You mirrored each other like reflections, heat radiating in the narrow stretch of air between your bodies.
“Touch me…” You whispered, shifting closer, hooking your leg over the hard plane of his thigh, feeling your skin burning where it met his. “And I’ll do the same to you.” The sharp breath he drew made his whole chest quake.
“Fuck… Y/N…” His voice cracked as he dragged his hand down your stomach, hovering just above your mound. “You’re going to drive me crazy.” His fingers trembled for a heartbeat before he spit onto them, wetting the pads, and slid his hand down to part your folds. At the same time, you leaned in, licking your palm slowly before reaching down to cup him. His cock twitched instantly at your touch, heavy and semi-hard, swelling and thickening as your fingers wrapped around the shaft. He gasped, golden eyes fluttering closed, forehead falling against yours.
“Oh God…” Your mouths found each other, lips colliding in a hot, greedy kiss. Tongues brushed, teeth caught, and every sound you made fed him like oxygen. As your hand stroked his length, he groaned into your mouth, the sound vibrating through you. His thumb pressed against your clit, slow circles that made your thighs tighten around him, your wrist faltering in its rhythm as your body shook.
Your breath hitched when he slid two fingers lower, dipping carefully into your entrance. He groaned at the heat of you, at the way you clenched eagerly around the intrusion. He curled his fingers up, stroking along that spongy spot deep inside you with exquisite precision.
“Y/N…” He whispered against your lips, pulling away just enough for his words to brush warmly across your mouth. “You feel so good. You’re so wet for me…Fuck, you’re perfect.” Your own pace on him faltered as his fingers moved faster, curling and dragging until your stomach tightened and your hips rolled desperately against his hand. He leaned down to your throat, kissing, then nipping, then sucking marks into your skin. Each bruise he left made you gasp, your grip on his cock tightening as you stroked him faster.
“You’re mine,” He moaned hoarsely against your neck, curling his fingers hard enough to make your whole body jolt. “Always mine. Let me feel you, baby. Let me take care of you.” The heat coiled tight in your core until it snapped, your release spilling over his hand as you moaned out his name, body quaking in his arms. He slowed, coaxing you through it, rubbing gently as you shuddered.
When your body finally eased, you caught his wrist, bringing his fingers to your lips–but he beat you to it, lifting them himself. His eyes didn’t leave yours as he licked your release from his skin, groaning at the taste.
”I want you inside me…” You stated, your voice still shaking from the high, and his eyes widened slightly. You pressed yourself closer to him, brushing your nose along his. “But I don’t want you to move. I just want you to stay still. I just want to be filled with you, Sentry.”
For a moment, his entire body stilled. Then he nodded slowly, reverently, voice breaking on the single word: “Okay.”
You reached down, wrapping your hand around the thick base of his cock. He was hard now, flushed and leaking, and you teased the head along your folds, smearing his pre-come against your entrance. He groaned raggedly, his arm sliding firmly around your back, pulling you tighter against his chest as if to brace himself.
With a slow breath, you guided him in. The stretch made you gasp, your body yielding inch by inch to his sheer size. He buried his face into your neck, groaning brokenly as you sank down onto him, inch after inch, until he was fully seated inside you.
You let out a satisfied hum, locking your leg around his hip to keep him flush with you. He could feel your walls pulsing and fluttering around him, every squeeze dragging another groan from his chest. His cock pressed deep, the tip nudging your cervix, filling you completely.
“…You feel so warm inside me like this,” You whispered, your lips brushing his ear. He hummed low, his mouth trailing kisses along your throat.
“Fucking love it,” He murmured, his words ragged, broken with pleasure. “Can feel everything adjusting to me…Every flutter, every pulse…It’s perfect. You’re perfect.” You kissed him, soft and lingering, drinking in the molten glow in his eyes when he pulled back.
“How long can we stay like this?” He asked, desperation bleeding into his tone. You smirked, brushing your thumb across his jaw.
”All night…If we keep you stimulated.” He let out a raged, guttural groan, his forehead bumping against yours.
“Please. Please, I want to stay with you wrapped around me. We need to make it happen. I want to wake up with you squeezing me. I want to spend every moment inside you.” Your smile softened, full of promise, and you kissed him again, sweet and deep.
”That…Can be done.” You replied.