The Train I Missed Took Me to My Sister’s Room

That Friday in October had been marked in red on my calendar for three months. I had the ticket in my hand, a small backpack with two pressed shirts, and a bottle of wine Marina had asked me for the night before. We hadn’t seen each other since July. Four hundred kilometers and a new job stood between us, and I had counted down the days like an impatient teenager.

I got to the station with fifteen minutes to spare and still missed the train. A protest was blocking the main avenue, and my taxi took a parallel street that ended at a construction site. When I jumped out of the car and ran the last two hundred meters, the rear lights of the last carriage were already disappearing around the bend. I dropped onto a bench on the platform and stared at the timetable on the wall as if looking at it hard enough could change it.

I tried my luck at the ticket counter. Nothing was left until Monday. I checked buses: sold out. I asked about a rental car and the prices made me laugh without humor. I called Marina and left her a long voice note, trying not to let my voice crack. Then I took another taxi back home, with the backpack still slung over my shoulder and the bottle warm in my hands.

I had been living with my sister Camila since our parents moved to the countryside. The house belonged to both of us, an old place downtown with wooden floors and a staircase that always creaked on the fourth step. Camila was twenty-three and worked at a neighborhood bookstore. I was twenty-six, programmed for a logistics company, and until that Friday I was the most serious older brother anyone could imagine.

I opened the front door quietly. The idea of explaining to Camila that I hadn’t left made me lazy. She had planned to have the house to herself, had bought wine, had talked about inviting some friends over. I thought she’d be out. I went up the stairs, trying to avoid the fourth step.

The door to her room was half open. A strip of yellow light cut the hallway in two. I passed by intending to keep going to my room, but a sound stopped me cold. It wasn’t music. It wasn’t the TV. It was heavy, ragged breathing and, underneath it, a wet splashing, unmistakable, the sound of fingers sinking into a wet cunt.

I froze. I should have kept walking. I should have coughed, made noise, announced I was home. Instead I stepped back and pressed myself against the hallway wall, hidden in the shadow cast by the unlit sconce.

Camila was on the bed, completely naked, legs spread wide with a pillow under her ass to lift her pelvis. I’d seen her in pajamas a hundred times, in a towel coming out of the bathroom, in a bikini at the club pool. Never like this. Never with her back arched and her thighs open and two fingers sunk to the knuckles into her own cunt, moving with a rhythm that allowed no interruptions.

This is wrong. Leave.

The thought came clearly and went on its own. I stayed. Camila had grown in my head as a girl with braids and scraped knees, and the woman in front of me didn’t fit that image in the slightest. She had small, firm tits, pink nipples hardened by the cold air in the room, so stiff they stood out with every breath. She had a small tattoo on her left hip that I didn’t remember ever seeing before: a crescent moon the size of a coin, just above a shaved mound that gleamed, soaked, between the parted folds. Her breathing was broken and her hair spread across the pillow.

Her fingers went in and out with a cadence that seemed rehearsed, the index and middle fingers buried to the end, dragging out a shiny thread each time that ran down her slit to her ass. With her other hand she pinched one nipple, tugged it upward, then moved to rub her clit with two fingers in a circle, then back to her breast. Every so often she let out a low, restrained moan, a whispered “ah, ah, fuck” between her teeth, as if she were still afraid of being heard even though she was supposedly alone in the house.

I felt my own response before I was fully aware of it. My cock pushed against the fabric of my pants, hard as a stone, and my hand, traitorous, had settled over it without me deciding to. I clenched my teeth. This wasn’t right. This was very wrong. But I didn’t move.

Camila changed position. She turned slightly, propped herself on one elbow, and for a moment she faced the door. I sank deeper into the shadow. Her eyes were closed. Her hand went down again and this time I saw everything: the cunt opened wide, the pink, swollen inner lips peeking between the outer ones, the swollen clit jutting out like a pearl, the fingers going in to the knuckles with a liquid sound, and the way her hips lifted a little off the bed to match the motion, fucking her hand as if it were a cock.

I lowered my zipper in silence. Pulled myself out. I was so hard the tip already had a clear drop beading on it. I started stroking with the same cadence she had, mirror against mirror, pulling the foreskin down and uncovering the glans with every downward motion. I knew perfectly well what I was doing. I knew perfectly well with whom. I didn’t stop.

She slipped in a third finger. I watched her cunt stretch to take it, watched the three knuckles disappear inside and come back out shining with slick. With her thumb she tapped at her clit, short and quick, and her tits bounced in tiny jolts in time with her wrist. She moaned louder, one long note that broke on the last syllable—“I’m cumming, I’m cumming, fuck, I’m cumming”—and her whole body tightened like a guitar string. I watched her arch, watched her clamp her thighs against her hand, watched her cunt pulse around her fingers in contractions that shook her belly, watched a little stream of fluid run down her perineum and wet her asshole. Her chest rose and fell at a rhythm she couldn’t control. Then she went still, a small smile on her mouth, her fingers still inside and her eyes closed.

I hadn’t finished, but I didn’t care. I tucked my cock away as best I could, the tip staining my briefs, and backed away from the door with long steps on my socks, crossed the hallway, and locked myself in my room with my heart pounding in my throat.

***

I leaned my back against the door and stayed there, listening. Nothing. Camila hadn’t seen me. No one had shouted. The house was as quiet as before.

I got undressed slowly, folded my clothes on the chair because my hands needed something to do, and got into bed. I turned off the lamp. The dark didn’t help. The image of my sister—because that was what she was, my sister, I couldn’t put it any other way—kept projecting onto the ceiling as if someone had left a projector on: the open cunt, the three fingers going in, the stream running toward the ass.

The erection wouldn’t go away. I grabbed my cock again, closed my eyes, and let myself sink into what had just happened. I thought of the moon tattoo, and of imagining a tongue tracing it. I thought of the sound she’d made when she came, of the “fuck” that had slipped through her teeth. I thought of the way she’d arched, and of how my dick would look sinking between those pink lips instead of her own fingers. I spat into my palm, spread it over my shaft, and jerked faster, tightening around the glans on every upstroke. I was about to cum when my bedroom door opened.

I tried to hide it late and badly. Camila switched on the ceiling light and I froze, the sheet tangled at my waist, my cock still in my hand and my face probably red as a tomato.

—I thought you’d left —she said. She was wearing a short white robe tied with a loose belt. Her hair fell wet over her shoulders. She had just showered.

—I missed the train —I replied in a voice that didn’t sound like mine—. I’m leaving tomorrow, if I can get a ticket.

She nodded. Said nothing else. She crossed the room and sat on the edge of my bed, with a calm that unsettled me more than any reproach. Her eyes dropped to the sheet, paused where the fabric lifted in an impossible-to-hide bulge, then came back to my face.

—How long were you watching? —she asked. It wasn’t an accusation. It was a question.

I opened my mouth to lie and nothing came out. I looked down. She gave a soft little laugh, without malice, and rested a hand on my thigh over the sheet, her palm warm, fingers spread, very close to where they shouldn’t have been.

—I felt the floorboards —she said—. There’s a plank that creaks in the hallway, level with my door. I’ve known it since I was twelve.

My stomach dropped to the floor. She had known I was there. She had carried on while I watched. She had come knowing her brother was jerking off in the hallway.

—Camila, I…

—Shut up.

She yanked the sheet with a quick motion and let it fall to the foot of the bed. I was left naked, cock pointing at the ceiling, rock hard, the glans shiny and a drop of pre-cum sliding down the shaft. I expected a shout, a slap, being thrown out of the house. Instead, she untied the robe belt and let it fall onto the chair. Her tits appeared again, just as they had half an hour before, pink nipples pointing up; the shaved cunt, still reddened, with the crescent moon tattoo a finger’s width above it.

—If you’re going to think about someone tonight —she said, already standing, already naked again in front of me—, let it be with full knowledge.

She climbed onto the bed on all fours, crawled slowly until she was between my legs, and took my cock in one hand. The skin of her fingers was cool, freshly showered, and the temperature difference made me close my eyes for a second. When I opened them, she was already lowering her head.

—You don’t have to say anything —she told me in a low voice, as if explaining a simple task—. Just stay still.

Her tongue traced a slow path from base to tip, broad and flat, leaving a shiny trail all over my shaft. I gripped the sheets with both hands. At the tip she paused, stuck her tongue out a little farther, made a circle around the glans, and licked my frenulum from bottom to top three times in a row. A moan slipped out of me.

In twenty-six years, no one had ever done that to me with such slowness, such attention to detail. The girlfriends before had been rushed, distracted, mechanical. Camila seemed to be reading every reaction I had and adjusting what she did like someone tuning an old radio. She opened her lips and took me all the way in until I felt the back of her throat squeeze my glans. I watched her swallow without taking me out, eyes closed, and a tiny gag shook her chest before she rose slowly, leaving my cock shining with saliva.

—Fuck, Camila —I whispered.

She smiled with her mouth full. She started to suck for real: down to the root, up again squeezing with her lips, her tongue working the underside of the shaft with every pass. Her right hand pumped at the base in time with her mouth; her left hand slipped between my legs and fondled my balls, weighing them, tugging them gently downward. Every so often she took them into her mouth—one first, then the other—and sucked on them while still stroking me with her hand full of her own saliva.

I looked down and couldn’t believe what I was seeing: my sister, my little sister, kneeling between my thighs with my cock disappearing into her mouth, her wet hair falling along the sides of her face and a string of saliva hanging from her chin. Every time she came up, the tip came out with a wet sound and she took a breath before plunging back down.

She went up and down twenty, thirty times, alternating tongue and lips, lips and hand. Every so often she paused for a second to look at me, to make sure I was still breathing. I wasn’t breathing. I was floating. She pulled back for a second, spat on the glans, and spread the saliva with her thumb in circles, never taking her eyes off me.

—Do you like the way your sister sucks your cock? —she asked in a low, rough voice I’d never heard from her before.

—Yes —I said. It was all I could say.

—Say it properly.

—I love the way you suck my cock.

—Good boy.

She took me back into her mouth to the root, and this time she sped up. Her right hand pumped the base in sync with her lips, her left squeezed my balls, her tongue never stopping. I felt the tingle begin at the base of my spine and climb.

—Camila —I said, because I felt I was about to finish and wanted to warn her.

—I know —she murmured without taking my cock out of her mouth—. I want it.

That word was the end. I came into her mouth with a shudder that threw my back against the mattress. The spurts came one after another, four, five, six, and I felt each one hit the back of her throat. She didn’t move. She stayed with her lips tight around the shaft, her tongue working my frenulum while I emptied out, swallowing every shot like her life depended on it. When the last tremor faded from me, she rose slowly, sucking as she came off me so not a single drop would fall, swallowed everything, sat back up slowly, and ran the back of her hand over her lips and smiled, showing me her clean tongue before closing her mouth.

***

She stayed seated on the edge of the bed for a while, in silence, until our two breathing rhythms settled into something similar. She stroked my thigh with the tips of her fingers, absentmindedly, as if we had just finished an ordinary conversation. Then she put on her robe, tied the belt in a loose knot, and walked to the door.

Before leaving, she turned around.

—You don’t have to spy on me —she said, with a smile that was anything but innocent—. When you’re in the mood, let me know. Brothers and sisters are supposed to look out for each other.

She switched off the light and closed the door. I stayed lying in bed, staring at the ceiling, with a mix of shame, desire, and relief I didn’t know where to put. I could still feel the ghost of her mouth around my cock, still taste her saliva on my skin.

***

Years passed. Marina and I got married one autumn and split up in another. Camila married a serious architect who adores her and whom I genuinely like. We live in different cities. We see each other on birthdays, at Christmas, at the occasional Sunday lunch at the country house. We talk about work, mortgages, cats.

Every now and then, when the vacations line up and our partners go to bed early, she shows up in the kitchen at three in the morning, barefoot, with an empty cup in her hand. And then, for a short while, we go back to that creaking board in the hallway. Sometimes it’s a hand slipping under the pajama pants, two fingers slowly sliding into a cunt that still reacts like it did that night. Sometimes it’s her mouth around me again, kneeling between the kitchen chairs, swallowing everything in silence so no one wakes up. It’s our secret. And after all these years, I still don’t know whether I keep it for her or for me.