Work Text:
Caleb still remembers the day they brought you home. You were tucked against his dad’s chest, small and tense, dust streaked across your skin. Cat ears flattened tight. Tail wrapped so hard around yourself you looked like you were trying to disappear.
He stared longer than he should have. His mom called his name but he didn’t answer until your gray-brown eyes lifted and caught his. Something deep in his chest pulled tight.
“Caleb, this is your sister. She might look different from us, but we hope you can love her as much as we love you—”
He moved before she finished. Nearly tripped over his own feet, hands grabbing his dad’s shirt as they lowered you down. A smile broke across his face wide and unstoppable.
“Meimei.”
The word felt heavy and new on his tongue. Your ears twitched. Warmth settled deep in his chest anyway, quiet and steady. “I will always protect you, meimei.”
He pulled you close without thinking, arms wrapping tight. You stiffened for a breath, then pressed your nose into his neck. He felt the warmth of your exhale. A soft laugh shook his shoulders. Your arms came around him next—slow at first, then tighter—until you licked his ear.
“Hey—” He jerked back, laughing bright and loud. You looked up at him, eyes soft.
“Gege,” you whispered, testing the word.
From then on he stayed close. His hand always found yours, fingers threaded tight like letting go was never an option. He gave you everything without being asked: the best Halloween candy pressed into your palm, his favorite Christmas gifts slid toward you, your plate always fixed with what you loved most. You never had to say a word. He loved how your face lit up, how you leaned into him, how his name sounded when it left your lips soft and familiar.
But one day, after years, your door stayed locked and they told him to stay away. It made no sense. Your voice still slipped through the walls at night, breaking apart.
He tried everything. Knocking gently, then harder, until he was hitting the wood with both fists. “Mom? Dad? Why is it always locked?”
No real answer came.
Then a broken noise dragged through the air and twisted wrong inside him.
“Ge… gege…”
He slammed against the door before he could think.
“Open it—what’s going on—why is she—”
Hands grabbed him, yanking him back. His father’s grip locked tight around his arm.
“Caleb, you can’t—”
“She’s crying!” His voice cracked raw, breath jagged as he fought to break free. “My meimei needs me—let me go!”
“You can’t be near her right now.”
“What does that even mean?” He shoved back hard, teeth clenched, chest heaving.
“She’s in there alone—”
“Gege… hng… want… gege…”
The sound hit him straight in the ribs. His hands started shaking.
“You hear that?” His voice dropped, trembling. “She’s calling me—Dad, please—”
“I said no, son.” The words cut sharp. “I will take her far away if you don’t obey.”
Everything holding him up gave out at once. Shoulders dropped. Arms fell slack. His head tilted forward as the fight drained from his body, breath rough at the edges like something inside him had quietly broken.
He didn’t fight after that.
He let them drag him back to his room, with his steps heavy.
His mother came later. She sat beside him on the bed. He barely moved, only shifting when her weight settled close.
“Caleb…” Her voice was gentle. “Forgive your father. He’s trying to protect both of you. Your sister… she’s not in any condition to see anyone right now.”
Silence stretched between them.
His voice came low. “What happened to her?”
A beat.
“It’s her first heat,” she says. “We’re still figuring things out. We gave her suppressants, but… it’s not working as well as we hoped.”
“…Heat,” he parrots.
She nods. “It’s normal for hybrids. She’ll get through it… Trust your parents, okay? We’re taking care of her.”
Caleb’s only ever heard about “heat” in passing; a biological phase hybrids go through, it is an intense, unpredictable condition. Enough to make their parents keep him at a distance from you without explanation.
He accepts it easily on the surface, telling his mother he understood, watching her leave it at that.
What they don’t see was how it stays with him.
Long after the house went quiet, he lay awake digging through every scrap of information he could find, piecing together fragments no one would explain properly. He wanted to trust them. Wanted to believe the locked door and the distance were necessary. But none of it sat right when he could still hear you through the walls—your voice strained and breaking, surely breaking the hearts of whoever heard it.
That night, long after the house falls quiet, Caleb slips out of his room.
He moves through the dark on careful feet, into his parents’ bedroom, fingers searching until they close around the key. The second it was in his hand he didn’t hesitate. He headed down the hallway, with quick, silent steps and heart hammering against his ribs.
The lock clicks.
The door opens.
“Meimei…”
And he locks the door, preventing everyone to interrupt.
His voice comes out low when he steps inside, the door closing behind him with a quiet click that still feels too loud in the room. The air is already thick as he takes another breath. Something warm and heavy settles against his skin the longer he stands there.
He sees you immediately.
On the bed. Your underwear barely covering you., Your body curling inward, knees drawn up, arms wrapped tight around a pillow, fingers digging into it hard enough that they don’t relax even when your body shifts in small, restless movements. Like nothing sits right—ike you can’t stay still inside your own skin.
He moves closer.
Among the disarray of your chaotic movements, one part of you is anchored. Something you’re clutching with reverence.
You don’t seem to notice him, so he takes another step forward. What are you holding? It looks like a piece of paper. No. A photo. And in this dark room, it’s difficult to make it out.
He leans in to get a better glimpse. When the shapes become sharper, they quickly turn familiar.
This is a photo of himself.
Something catches in his throat. He swallows, the motion heavier than it should be. His jaw tightens for a second before he exhales, steadying himself in a way that doesn’t quite work.
He should leave, shouldn't he? If you had your head on straight, you wouldn’t want him to see you like this. .
His hand lifts, pausing just short of touching you before settling against your shoulder. His palm meets your skin, and the heat of it sinks in immediately. Warmer than he expected, it’s enough to make his fingers flex slightly against you.
“Meimei…”
Your body stills under his touch. Just enough that he feels it, the tension tightening before holding there, and he leans in a little without thinking,.
“Meimei… gege’s here. I’m here,” he says, his voice soft.
You turn toward him.
Your face is flushed. Color spreads across your cheeks and down your neck, your lips parting as your breath goes ragged. And there’s wetness at the corner of your mouth, slipping down slowly along your chin; your neck.
Your reddened, glossy eyes find him.
He doesn't move.
His hand stays on your shoulder, fingers pressing a little more firmly without him noticing. Then, his chest tightens—sharp, hard to interpret, harder to ignore as you shift closer. You grip on the photo, loosening just enough that it bends in your hand, and your lips part again. Almost inaudibly, you speak—
“Ge… gege…” you say, voice unraveling into soft, broken sounds that drag out between uneven breaths. Tears slipping endlessly down your temples, they soak into the sheets beneath you.
Caleb is already there beside you, close enough that his warmth reaches you before his hands do. “That’s right… gege’s here… my baby…” His voice drops instinctively, thick and low as he leans closer. “Tell me how to help you, hm?”
You don’t answer properly. Your fingers curl into his shirt instead, clutching, dragging yourself closer until your knees press into his thighs. “Want gege… want gege… gege, please…”
He doesn’t hesitate. In one motion, he pulls you into his lap, steadying you as your body immediately pushes into him. Your face buries into his neck. Breathing hot as you nuzzle closer, your tongue drags along his skin with a desperate, almost instinctive hunger.
“Easy…” he murmurs, but the word lacked force the moment it left him.
You don’t listen. In fact, you couldn’t.
Your fingers tighten at the back of his neck as your hips begin to move. Grinding down your clothed pussy against his shaft, you chase friction that still isn’t enough. The pressure pulls a low, restrained groan from Caleb, his body reacting immediately, and his arousal hardening beneath you, straining against his pants.
“Want gege… meimei needs you…” your voice cracks, tears falling harder the more you press into him. “Why did you come so late…?”
His breath hitches against your hair. “I’m here now,” he whispers, though his control is already thinning.
His hand lifts to your face, brushing damp strands of hair away. “I’m here… forgive me, baby. It hurts, doesn’t it?”
He lets you move, lets you take what you need, even as restraint slips from him in fractured pieces.
“Bad… you’re bad…” you choke out, your teeth sinking into his neck, sharp enough to pull a strained groan from him. “Gege doesn’t love me anymore…”
That’s where it shifts.
Your back hits the bed, his weight following, pressing you down, caging you in. The mattress dips deeper beneath both of you, your legs parting instinctively as he settles.
“Bad?” he echoes, something darker threading through his tone. His lips brush your eye, catching the last of your tears. “Then I wouldn’t be here, would I?”
He lingers there, looking at you.
Then, softer, “Tell me… where does it hurt?”
He already knows. That’s the cruelest part of him.
Still, he wants to hear it; wants you to say it, to need him openly.
“There…” Your hand trembles as you guide his, pressing it between your thighs, over fabric already damp.
A slow smile spreads across his lips. “So this is what you were chasing against me earlier…” His fingers press, rubbing through the soaked material with deliberate pressure. “Is this enough?”
“Huh… eeegh.. No… no… take it off, ge…”
His smile deepens.
Without rushing, his hands slide beneath the fabric, pulling your panties away and discarding them before returning to you—his fingers brushing over bare, slick skins.
“Look at you…” he murmurs, voice dropping lower. “Already this wet… all for gege?”
“Yes—ugh… please…”
His touch spreads across you slowly, every inch becoming claimed under his hands. His finger’s there; grazing, pressing, lingering.
Even the soft hair of your mound doesn’t escape him, his touch grounding you in every sensation.
Your hips lift instinctively, chasing him.
“Good?” he asks softly.
You shake your head weakly. Breath breaking, you plead, “More… inside…”
He gives in.
One finger first, sliding into you slowly, watching your face as your body reacts. Your back arching as you find yourself only able to take in quick, short breaths.
“Gege—!”
That sound pulls something darker from him.
He adds another two, stretching you carefully, his movements controlled but deepening, coaxing your body open.
“Ah… ah… gege…”
His pace adjusts, steady but purposeful, while his other hand moves upward, tracing your stomach before slipping beneath your bra. His fingers close around your breast, and he squeezes slowly, drawing another broken sound from your throat.
“Yes… there… deeper—”
“Good girl…” he murmured against your skin, voice low and rough. “Say my name. Only gege can make you feel like this right?”
“Only gege—!”
When you broke you dragged him down hard, lips crashing into his. Your body gave in completely.
He followed with a deep groan, mouth devouring yours. His hand slid down again. Warmth spread across your stomach as his fingers slipped away leaving you clenching around nothing. Then his mouth returned fiercer teeth catching your lip tongue pushing deep claiming every desperate sound you made.
Your mouths turned messy. Wet heat spilled between you dripping down your chin and throat.
“Gege…” you gasped between kisses voice cracking. “Still need more… it still feels so empty…”
Caleb pulled back just enough to look at you—oh look at that chest heaving, lips swollen, even your eyes glassy with pure need. The sight of his little sister like this because of him only fed the hunger sharper.
“Empty?” he rasped, voice dark. “Then take all of me. I am all yours, meimei.”
He straightened slowly, eyes never leaving yours. His hands moved to his shirt, pulling it off in one rough motion and tossing it aside. The rest followed—everything—until he stood completely bare before you. Hard, flushed, and aching. His cock curved heavy against his stomach, already leaking at the tip.
You watched dazed, breath catching. The sight of your own brother like this—fully exposed and throbbing for you—sent another rush of heat flooding between your legs.
“Gege…”
He leaned down and kissed you slower this time. Took your hand and guided it down, wrapping your fingers around his thick length.
“Feel that?” he purred against your lips, voice thick. “That’s what you do to me. Every time you call me gege. Every time you look at me like this. I’ll take care of you… every single time you need it. Still think I’m bad?”
Your body trembled hard. “No… you’re my good gege… only mine…”
“Good.” He settled between your thighs spreading you wider. “This might hurt a little, baby. But you’ll take me right?”
His gaze fixed on you as he hovered you. Then he eased forward slow and careful letting you feel every thick inch as he pressed inside. The stretch came heavy and overwhelming.
Your fingers dug into his shoulders breath stuttering.
“Open wider for me,” he whispered voice gentle but strained. “That’s my good girl… just like that. You’re doing so well.”
Still, he doesn’t give you everything. He stops halfway holding still—letting the fullness settle deep while you adjusted around him.
“Don’t tease me…” you breathed voice thin and desperate.
A faint almost-smile tugged at his mouth.
And then he moved again. This time he didn’t stop.
He fucked you greedy and rough hips snapping hard and fast. Skin slapped loudly against skin. The bed creaked violently beneath you but neither of you cared. He gripped your hips tight enough to bruise grinding deep on every thrust like he wanted to stay buried inside you forever.
“Mine,” he growled against your cat ear, biting it down. “You’re fucking mine. Heat or not… you’ve always been mine.”
You moaned broken and needy, meeting every brutal thrust. “Gege… harder—please—”
He gives it without hesitation. No restraint left. Just pure raw hunger. Sweat-slick skin. Tangled limbs. The wet obscene sound of his thick cock pounding into your soaked pussy filled the room.
He kissed you again—messy and desperate teeth sinking into your lip. “Gonna fill you up,” he panted between thrusts. “Gonna pump every drop into this tight little pussy until it’s leaking out of you. You want that don’t you? Want your gege’s cum deep inside his baby sister?”
You nodded frantically tears of overwhelming pleasure slipping down your temples. “Yes—yes please—give it to me—“
Caleb’s pace turned punishing. He fucked you like nothing else existed. His hand slipped between you rubbing your clit in tight fast circles until your whole body seized up around him.
You came hard clenching violently around his cock. That was all it took.
With a low broken groan Caleb slammed deep and spilled inside you. Thick hot pulses of cum flooded your pussy again and again. He kept thrusting through it grinding every drop as deep as possible like he needed to mark you from the inside out.
Even after he finished he didn’t pull out. He stayed buried to the hilt breathing hard forehead pressed to yours. His cock still twitched with aftershocks leaking more cum into you.
You trembled beneath him still greedy. Your hips rolled weakly chasing the feeling of him warm and full inside you.
Caleb let out a soft wrecked laugh and kissed you slow and deep. “Oh now you are turning into a greedy little baby,” he whispered against your swollen lips. “C’mere baby.”
You whimpered in agreement, your hips already rolling again chasing the feeling of him still buried deep and leaking inside you. The heat still burned hot under your skin refusing to settle. One orgasm wasn’t enough. Two wouldn’t be either. Your body craved more of him more—of this, more of everything only your brother could give.
He felt it too. His cock twitched back to full hardness inside you almost instantly. “Still needy?” he murmured voice rough with fresh hunger. “Good. Because I’m nowhere near finished with you.”
He started moving again slower this time but deep and deliberate grinding against that spot that made your toes curl. You moaned into his mouth, legs tightening around him pulling him impossibly closer.
Then—
A sharp knock echoed from the hallway.
“Caleb?” His father’s voice sounded tense. “Open the door. Now.”
Another knock louder this time. His mother’s voice joined in voice strained with worry. “Sweetheart we know you’re in there. Please… this isn’t right. You have to stop.”
Caleb froze for half a second buried to the hilt inside you. Then a dark possessive smile curved his lips. He rolled his hips again deliberately slow dragging a broken moan from your throat.
“They can hear us,” he whispered hot against your ear still moving inside you. “Let them.”
The knocking grew louder fists pounding harder. Followed with a loud banging sound of cupboards, tables and other objects in the room being thrown towards the door to keep it closed.
“Caleb! Open this door right now!” His father’s voice cracked with anger. “She’s your sister—think about what you’re doing!”
You whimpered, nails digging into his back as another wave of heat crashed through you. The shame should have stopped you. The fear of getting caught should have made you push him away. Instead it only made everything hotter and desperate.
“Don’t stop,” you begged with your shaky voice. “Please gege… don’t stop.”
Caleb groaned low. Thrusting harder now making the bed creak loudly with every snap of his hips. “I won’t,” he promised with teeth grazing your neck. “Not for them. Not for anyone.”
The pounding on the door continued frantic now mixed with worried shouts but it all faded into background noise. Nothing mattered except the slick sound of him driving into you, the heat still raging between you and the overwhelming need to stay connected like this forever.
He kissed you again deep—swore from now on he is claiming every moan as he fucked you harder chasing another release while your parents begged from the other side of the locked door.