!!!!!!strictly platonic!!!!!!
this is also posted in my demon slayer one shot book, which you can read on wattpad here
Dawn slid softly through the shoji screens, painting the tatami in strokes of gold. The estate was still. Quiet in that sacred, early way it always was before the kettle sang or the sparrows began their morning chatter.
You stirred from your futon with a start of excitement, the kind that warmed you from within before you'd even stood. It wasn't just another morning today. It was his morning — Tanjiro's tenth birthday.
You rose carefully, tying your hair up and smoothing your kimono sleeves, mindful of the hush that still blanketed the house. Every board seemed to sigh under your steps, but you moved lightly, unwilling to wake him just yet. Your son was usually the one to greet the dawn first, always so eager to fetch wood or help in the kitchen. However, for once, you wanted to be ahead of him.
The cool kitchen air nipped at your fingers as you knelt to light the hearth. A spark, then the familiar crackle of kindling, and warmth began to fill the room. You opened the cupboards, pulling down what you'd gathered from the market the day before: fresh fish, soft red beans, chestnuts to roast. You even smiled to yourself as you remembered the small pouch of konpeitō you'd hidden away, tucked deep in your sleeve so he wouldn't notice.
You were fortunate, and you knew it. The fine wood of the house, the neatly polished dishes, it was all a direct result of your hefty inheritance. But you'd never cared for luxury the way you cared for mornings like this. The simple act of preparing a meal for your son, knowing the delight that would bloom on his face when he saw it was worth more than any silk or silver.
Steam rose from the rice pot as you set out the dishes, the scent of miso and roasted chestnuts curling through the air. You poured two cups of tea, placing one aside for him to gently cool.
Outside, the wind murmured through the trees. Inside, you paused to admire your work, a smile tugging gently at your lips. "Happy birthday, my little one," you whispered.
You slid open the shoji quietly, peeking into the dim room where Tanjiro still slept. The faint rise and fall of his chest was steady beneath the blanket, his dark hair tousled in soft, uneven tufts that caught the morning light. He looked so peaceful in his small, still body. But you couldn't help but notice how his shoulders had begun to square a little more lately.
Kneeling beside him, you reached out and brushed a few strands of hair from his forehead. His skin was warm beneath your fingers, his breath slow and even. You leaned down and pressed a gentle kiss to his brow, light as falling snow.
"Good morning, birthday boy," you whispered.
He stirred, lashes fluttering as his eyes blinked open. For a moment, he only squinted up at you in that hazy, half-dreaming way he always did, before recognition softened his face into a sleepy smile.
"...Mama?"
You smiled back, smoothing his hair again. "Mm. Come on, sweetheart. Breakfast is waiting."
He yawned, rubbing his eyes, and you couldn't help but laugh quietly as you lifted him into your arms. Though he was growing heavier every year, he still fit against you so naturally, his head resting against your shoulder and his small hands clutching your sleeve.
The warmth of the kitchen greeted you both, fragrant with chestnuts and miso. You set him down by the table, where his cup of tea waited, steam long since faded to a gentle warmth.
"It's your favorite today," you said as you ladled miso into his bowl.
Tanjiro's eyes brightened instantly — wide and shining the way they always were when he was happy. "You remembered the rice balls, too?"
"Of course I did. You think I'd forget something that important?"
He giggled, tucking his hands together before bowing his head in a polite little thank-you. He was always so earnest, even over the simplest meal. You watched him eat for a moment, heart swelling at the sight. The way he hummed when something tasted especially good, how careful he was to test his tea before taking a big sip, it all reassured to you that your son was always your highest priority.
When the dishes were empty and the morning had fully bloomed, you reached behind you with a small smile. "Now then," you said softly. "I believe there's something else for you."
Tanjiro blinked, sitting up straighter. "Really? What is it?"
You brought out a small bundle wrapped neatly in deep red silk. His fingers trembled a little as he undid the knot and peeled it open, revealing a neatly folded blue scarf, the threads fine yet strong.
His breath caught. "...It's beautiful."
You brushed your thumb over the fabric, smoothing it out. "It'll keep you warm on the mountain. You're always running off to help others, and I'd rather you not freeze while you do it."
Tanjiro smiled so wide it made your chest ache. "I'll wear it every day," he said earnestly, pressing it close to his chest. "Thank you, Mama."
You thought that might have been enough, but then his small hand dipped into the sleeve of his haori, pulling out a folded piece of paper. He held it out to you shyly. "I... I made you something, too."
It was a drawing, rough and childish, the lines a little crooked — but unmistakably the two of you: his tiny figure holding your hand beneath the bright orange sun. Your eyes stung instantly.
He flushed, suddenly embarrassed. "It's not very good, but... I wanted you to have it. 'Cause you always make things for me."
You pulled him into your arms before he could finish the sentence, pressing your cheek against his hair. "It's perfect," you murmured. "Absolutely perfect."
The blue scarf lay between you, soft and warm symbolizing a small promise of love that would one day follow him into the wide, uncertain world.
You pinned the little drawing to the wall beside the table, right where you'd see it every day as you cooked. The paper fluttered slightly in the rising warmth from the hearth, sunlight slipping across the rough ink strokes. It made the kitchen feel even more alive somehow, as if the house itself smiled back at you.
Tanjiro stood on his toes to watch you press the paper flat. "There! Now it won't get lost."
You ruffled his soft hair. "It never would have, but now everyone who comes by will see what an artist you are."
He flushed, grinning so wide his cheeks dimpled. "It's not that good."
"It's perfect," you said again, and meant it.
The day unfolded quickly after that. Tanjiro insisted on helping with the chores, and although you reminded him it was his birthday, he wouldn't hear of sitting still. Together you swept the engawa, hung laundry that fluttered like pale flags in the cool breeze, and fed the chickens that scurried around your feet with hungry squawks.
When the sun climbed higher, you packed a small basket and took him to the garden. The air smelled of damp earth and new grass. He chased a butterfly between the vegetable rows, laughing when it landed briefly on his sleeve. You sat beneath the shade of the wisteria tree, watching him dart through the light. Your boy, your little flame, bright as ever against the green.
Later, you shared the sweets you'd hidden — the tiny, jewel-like konpeito. He counted each one carefully, then tipped a few into your palm. "Half for you," he said firmly.
"Half?" you teased. "Even on your birthday?"
"It's only fair," he said, nodding in that serious, thoughtful way of his.
You laughed softly and ate them together, the candy crunching sweetly between your teeth. The scarf around his neck fluttered in the wind, striking blue matching the afternoon sky.
By the time the sun began to dip behind the mountains, you were both tired and content. Tanjiro leaned against your side, eyes half-lidded, his warmth pressing through your sleeve.
"You had a good day?" you asked, brushing a stray hair from his cheek.
He hummed drowsily. "The best one ever."
You kissed the top of his head and held him a little closer, breathing in the faint scent of soap and smoke that always clung to him. For a moment, the world felt utterly still, just the two of you, safe in that quiet, golden light.
The house had gone quiet again by the time night settled in. The lamps burned low, painting the walls in soft amber light. Outside, the crickets sang their steady song, and somewhere beyond the hills, an owl called, low and distant.
Tanjiro's breathing had grown slow beside you as you knelt by his futon, smoothing out the blanket that reached up to his chin. His hair smelled of soap; the blue scarf you'd made was folded neatly at his bedside, within easy reach, as though he couldn't bear to be too far from it.
You brushed a thumb along his cheek, tracing the soft curve of it, and felt the smallest pang deep in your chest. Ten years. Already ten. It felt like you had only blinked; that it had only been a moment ago when he fit in your arm entirely, unbearably tiny and wordlessly blinking at the world with those same warm eyes.
He stirred slightly at your touch, murmuring, "Mama?" in that half-asleep voice that always softened you.
"I'm here," you whispered. "Go back to sleep, sweetheart."
His lips curved faintly into a drowsy smile, eyes still closed. "...'Night."
You leaned down and kissed his forehead again, lingering just a moment longer than you had that morning. "Goodnight, Tanjiro," you murmured. "And happy birthday, my little one."
He didn't answer, already lost to dreams, but his small hand found yours beneath the blanket, curling weakly around your fingers before relaxing again.
You stayed there a while longer, just listening to his breathing and watching the shadows sway against the walls. Then, quietly, you rose, sliding the door shut behind you. The kitchen waited in its gentle stillness, the faint outline of his drawing catching the last glow of the lamp.
You smiled at it as you blew out the light.
Another year older. Another year well spent with your son.