Stepbrother's Milky Possession (Stepbrother's Possession #1)

1. Clara

CLARA

The kitchen smells like dark roast and someone else's routine.

I keep my head down as I cross the threshold, bare feet on cold tile, heading straight for the cabinet where I stash my granola bars behind Carol's organic tea collection. Three months of living in this house and I still feel like a guest rummaging through someone else's pantry.

"Morning, stepsister."

That voice stops me mid-reach. Low. Unhurried. The kind of voice that fills a room without raising its volume.

Callum, my stepbrother, stands at the island counter with a mug between his hands, watching me over the rim.

He's already dressed—dark henley with the sleeves shoved up past his forearms, where the edges of black ink disappear beneath bunched fabric.

His black hair is still damp from a shower, pushed back from his face in a way that sharpens the hard angles of his jaw and the dark stubble that never quite gets shaved clean.

He's enormous. Not gym-rat enormous—something denser, more permanent.

Broad chest, broad shoulders, the kind of frame that makes doorways look narrow.

At six-five, he makes this oversized kitchen feel compact.

And those eyes. Ice blue under heavy brows, direct as a closed fist. Every time they land on me, I get the distinct sensation of being cataloged.

"Morning," I manage back, pulling a granola bar free and tearing the wrapper with more focus than it warrants.

He takes a slow sip of his coffee. Doesn't look away. "You eat more than that for breakfast?"

"I eat plenty."

"That's not what I asked."

I bite into the bar and chew deliberately, holding his gaze.

Three months of this. Three months of Callum Reid asking questions that sound like observations, making statements that feel like orders, filling up every square foot of shared space with that quiet, suffocating authority.

Ever since my mom married his dad and moved us into Edward's sprawling colonial on Wren Street, I've been navigating around him like furniture I keep stubbing my toes on.

He sets his mug down and leans both palms flat on the counter. His hands are massive—wide knuckles, thick fingers, a silver watch glinting at his left wrist. "There's eggs in the fridge. Sit down, I'll make you something."

"I have class in forty minutes."

"Then you better sit down fast."

I don't sit down. I finish the granola bar standing, toss the wrapper in the trash, and grab a glass of water. Callum watches the entire performance without moving, his jaw ticking once when I rinse the glass and set it in the rack.

"Thanks for the offer," I say, already heading for the doorway. My backpack is on the bench by the front entrance where I left it last night.

"Clara."

I pause but don't turn around.

"Drive safe."

Something about the way he says it—not casual, not throwaway, but weighted with specificity—makes the back of my neck prickle. I lift a hand in acknowledgment and keep walking.

Upstairs, I pull on a fitted white t-shirt and a light jacket, checking myself in the mirror.

My dark hair is cooperating today, falling past my shoulders in a way that doesn't require intervention.

I look fine. Normal. Twenty years old and headed to a Tuesday morning sociology lecture, nothing remarkable.

Except there's a strange tightness in my chest. Not emotional—physical. A fullness behind my sternum, settling heavy in a way I can't quite place. I press the heel of my hand between my breasts and frown at my reflection. Probably slept wrong. Or the underwire in yesterday's bra left a bruise.

I grab my bag and head out.

The drive to campus takes twelve minutes.

I spend most of it fiddling with the radio, window cracked, letting October air cut through the car.

The fullness doesn't fade. If anything, it migrates lower, settling into my actual breasts in a way that makes my bra feel too tight.

I adjust the strap at a red light and chalk it up to PMS, though my period isn't due for another two weeks.

Whatever. I have a midterm review to focus on.

Professor Whitman is already mid-slide when I slip into my seat in the third row. The lecture hall is half-full—enough people to blend in, not enough to disappear completely. I pull out my laptop, crack it open, and start typing notes on autopilot.

Twenty minutes in, the tingling starts.

It begins at my nipples and radiates outward, a warm prickling sensation that makes me shift in my seat.

I cross my arms over my chest instinctively, pressing down, and the pressure sends a sharp ache rolling through me.

Both breasts feel swollen, heavy in a way they've never felt before—not before a period, not ever.

I glance down at my chest and my heartbeat stutters.

Nothing visible yet. Just the tight fabric of my white t-shirt pulled taut over what looks like... more of me than usual.

I refocus on my screen. Type a half-sentence.

Delete it. The tingling intensifies, shifting from a prickle to a pulse, deep and rhythmic, centered behind both nipples.

My skin feels hot. Oversensitive. The cotton of my bra scrapes against me with every breath and I have to press my lips together to keep from wincing.

Then the dampness.

It starts small—a faint wet warmth spreading from each nipple outward, soaking into the cup of my bra. I freeze. My fingers hover over the keyboard. I look down again and this time my stomach drops straight through the floor.

Two dark circles. Spreading on my white t-shirt like spilled water, radiating from the center of each breast. Growing.

No. No, no, no.

I slam my laptop shut and shove it into my bag, movements jerky, hands shaking. The girl next to me glances over and I yank my jacket off the back of my chair, pulling it on and zipping it to my chin in one frantic motion. My face is on fire. My pulse hammers so hard I can feel it in my throat.

"Sorry," I mutter to no one in particular, scooting past three sets of knees to reach the aisle. I don't look at Professor Whitman. I don't look at anyone. I keep my arms crossed over my chest and my head down as I push through the lecture hall doors and into the bright, merciless corridor.

I make it to the bathroom before the first real sob catches in my throat, but I swallow it down.

The stall lock clicks shut and I unzip my jacket and stare at the damage.

The patches have spread to the size of silver dollars, the fabric clinging wetly to my skin.

When I peel the shirt away from my left breast, a thin, pale liquid beads at the surface and drips down my stomach.

What the fuck.

I am not pregnant. I am a virgin. I haven't even had my first kiss yet. This is not possible.

My hands shake as I press wads of toilet paper against myself, soaking up the fluid that keeps coming in slow, insistent pulses. It doesn't stop. Every time the pressure builds behind my nipples, more leaks out—warm and thin and faintly sweet-smelling and absolutely, categorically wrong.

I zip my jacket back up, grab my bag, and leave campus without going back for my laptop charger, my water bottle, or my dignity.

The house is empty when I pull into the driveway. Edward's car is gone—he has some business trip this week, or a meeting, I can't remember which. My mother's sedan is missing too, which means she's at her Tuesday volunteer shift at the library and won't be back until four. Small mercies.

I let myself in through the side door, drop my bag on the floor, and take the stairs two at a time. My jacket is soaked through now—both dark patches visible even through the navy fabric—and the ache in my chest has deepened into something that feels almost like a cramp, relentless and building.

My bedroom door shuts behind me and I strip the jacket off, then the t-shirt, then the bra. Everything is damp. I leave the wet clothes in a heap on the floor and turn to face the full-length mirror on the back of my closet door.

I don't recognize what I'm seeing.

My breasts are swollen—visibly, unmistakably larger than they were this morning.

The skin is taut and flushed pink, and my nipples are darker, puffier, beaded with translucent droplets that catch the light.

As I watch, a thin stream of milky fluid runs from my left nipple down the curve of my breast and drips onto my stomach.

I press both hands against myself and hiss at the pressure. It hurts, but in a way that makes me want to press harder, like a bruise I can't stop touching. More fluid wells up between my fingers, slick and warm.

"Oh my God," I whisper to my reflection. The girl staring back at me looks scared. "Oh my God."

I grab a towel from the bathroom and press it against my chest, sitting on the edge of my bed with my shoulders hunched.

I don't know who to call. I don't know what to Google that won't send me into a medical spiral.

I don't know what is happening to my body and the not-knowing is worse than the leaking, worse than the ache, worse than?—

The front door opens downstairs.

Heavy footsteps. Not Carol's quick, light tread or Edward's measured pace. These are deliberate, unhurried, and solid enough to feel through the floorboards.

Callum. My stepbrother.

No. Not now. Not him, not now.

I scramble for a clean shirt but my hands are slippery and the towel drops and I'm halfway to my dresser when the sound escapes me—a frustrated, panicked noise that's louder than I intend.

His footsteps stop on the landing. Then they redirect. Toward my room.

"Clara?"

"Don't—" I grab the towel off the floor and clutch it to my bare chest as the door swings open. "I said don't come in!"

I didn't say that. I didn't say anything close to that in time.