Thread by @tiredwrites

#BKDK, #mouseku, season: fall

Katsuki hums as he settles his hands on his hips, staring down at the little pastries as big as the pads of his fingers. Next to the little plate full of pastries, Deku squeaks and giggles, little chubby mouse feet squishing against the warm

countertop as the little mouse dances around. Katsuki can see the sheen of drool - the little glutton, he swears - dribbling down Deku's cheeks as he eyes the apple and cherry turnovers.

To be quite honest he had no idea how he managed to cut the delicate puff pastry that small.

It was a work of trial and annoying-ass error, but he /finally/ got it down just enough to make good-ish-looking pastries for his little mouse. Said mouse looked like he was seconds away from grabbing a few pastries and running away with them to hide away and eat them.

"Alright, Deku. You can go ahead," Kacchan huffs, patting the little mouse's butt as the little thing squeaks and runs forward. "But! Be fuckin' careful, they are /hot/, and I don't want you to burn your mouth," Kacchan huffs, swiping his finger against Deku's chubby cheek,

wiping away the line of drool sliding down cheeks full of freckles. Somehow, Deku had managed to triple his freckles, not that Katsuki was complaining. As much as he wished Deku wasn't so small - for the fear of crushing the mouse laid heavy in his bones - he also wanted to cover

Deku's freckles in kisses. That was a bit hard when your lips were bigger than the chubby little mouse's head.

Deku nodded up at him, smiling big and wide as he pecked his finger pad. Katsuki hummed as he sat down on the stool he pulled up,

watching Deku circle the plate like a predator circling its prey, green eyes glittering with greed. "Don't make yourself sick, Deku. You can always have more later on; no use in not savoring them," Katsuki huffed, petting at the delicately furred fringes of Deku's big mouse ears.

Deku squeaked and nodded, reaching out to point at a tiny pecan pie. Katsuki hummed as he shooed the little mouse away, grabbing his small pairing knife. As carefully as he could so as not to break the little pie, he cut the pie into perfect slices for Deku.

Deku was hopping on his feet; the sound of those cute feet pattering on his marble counter made his lips quirk up into a gentle smile. "Alright, there you go," Katsuki hums as he watches Deku take the little pie slice in his hands, taking a big chomp out of the delicate but

sturdy crumbly crust and sweet pie filling. Katsuki watches for Deku's reaction, his head resting on his forearm as his other arm lazily messes with the spikes at the top of his head, rolling the straight strands between his fingers.

Deku lights up like a little lightbulb, squealing happily as his cheeks puff like a little hamster. His tail whips and curls around his pinky finger, little feet almost kneading the air. Katsuki grins as Deku's eyes glitter, taking hasty chomps out of the pecan pie slice.

Pie crust crumbs flaked all over Deku's cute little All Might shirt - a discovery he wasn't expecting to find when he went to the doll site he used to find Deku's other clothes - making the blond huff as he reached out. "Such a messy ass eater, Deku,"

Katsuki hummed as he brushed the crumbs off of Deku's shirt as the little thing blinked up at him. Katsuki used the knuckle of his finger to brush the crumbs off of the little mouse's cheek, getting a little giggle in return. Deku kisses his knuckle, smearing crumbs and pecan pie

filling against his skin. Katsuki rolled his eyes as he huffed, licking away the crumbs as Deku finished the first slice of pie, reaching for another.

Katsuki was happy to watch Deku squeak and squeal as he tried the other pies - cherry and pumpkin - before

deciding he was too full. He had then politely asked to be carried to his little mini beanbag chair sitting on the window sill where he'd take his nap. Katsuki only hummed as he tucked the stuffed mouse in, draping a little mini fuzzy blanket over the chubby little mouse.

-

"Deku," Katsuki hummed as he watched the little mouse walk up to him after taking the mini elevator Katsuki had made for him up to the counter. "Got you somethin'," Katsuki hummed, watching Deku light up and dance over to him, bouncing on his little squishy toes. Deku made rapid

grabby hands at him, eyes glittering with excitement as the premise of a gift. Katsuki grinned as he set down a little kitchen set - a set of three counters, a stove, and a working stovetop - in front of the little mouse. The head tilt that he got in return made him want to keel

over and grip at his thundering heart, but he kept that urge inside. Deku looked around and opened the working oven door, peering in before walking around it. He poked and opened the drawers - full of little plates and mini dish towels -

before looking up at him after finishing his thorough poking and prodding.

"This is your kitchen. I'll teach you how to cook so you can cook whenever you want," Katsuki hummed, petting Deku's soft mossy curls, watching the little mouse preen under the warmth his hand carried.

"Everything works, but I'll always be around when you cook, alright?" Katsuki rumbled as he watched Deku nod and trot around the little kitchen. Katsuki picked it up and settled it against the wall, connecting the counters to the stove. He also took all the other little things -

pots, pans, utensils, knives, and other shit - out of the box they had been delivered to him in. He handed them all to Deku, letting the little mouse decide where they would go. They worked in tandem to set up Deku's little personal kitchen, and by the end of it,

Deku was grinning as he stared at his own little kitchen.

-

Deku sniffled and hiccuped, glistening tears sliding down his cheeks as Katsuki held his hand in cold water - just cold enough to soothe but not to hurt - rubbing at Deku's little delicate wrist bones.

A little incident had led Deku to burning two of his hand beans, making the little thing panic at the pain. Katsuki had managed to wrangle the squeaking and sobbing little mouse into his arms as he ran the water to a nice and cold temp before filling a little bottle cap with said

cold water. "Shh, s' okay, baby," Katsuki muttered, landing a soft kiss on the top of Deku's head. "You'll be okay; I've got you," Katsuki soothed the little quivering mouse, whose tail was currently trying to choke out his pinky finger. Deku looked up at him with big,

vulnerable eyes, glistening with unshed tears. They looked like preciously polished gems when they caught the lush gold light of the evening peeking through his windows. Deku held up his uninjured hand, sticking out his pinky as his tail pulsed around his finger,

waves of pain slowing down. Katsuki couldn't help the fond look that slid over his face as he realized what Deku was doing.

A pinky promise.

Katsuki wasn't sure where he had learned it - probably from those cheesy romcoms the little mouse loves or the All Might cartoons - but the utter trust and delicate look Deku stared at him with made him want to keel over and die.

Katsuki stuck his own pinky out,

bumping the pads over their pinkies together, feeling Deku's hand bean squish against his calloused finger pad. "Pinky promise," Katsuki hummed. "I'll always have you, Deku," Katsuki hummed as Deku curled up in his palm, wiping his wet hand on the little yellow frilly apron

Katsuki had gotten him. "Let's go bandage those burns up and continue, hm?" Deku nodded happily, squeezing his finger with his tail once more as Katsuki rifled through his medicine cabinet.

The gauze and some neosporin would work for now until Katsuki could find a more concrete

way to heal any possible wounds or burns in the future.

-

"Ten out of ten," Katsuki hummed, savoring the little veggie quiche Deku had made, leaning against the counter. The little fork - made honestly for /Deku's/ tiny-ass hands - looked ridiculous clutched between his fingers

as Katsuki nodded. Deku absolutely glowed at the rating, dancing around on the counter as he giggled and squeaked, his little wiggly tail flowing with each movement. Katsuki couldn't help but hum as he watched Deku's fuzzy mouse ears flop around with each movement.

"Could use a tab bit more salt, but overall, it's amazing. Good job, Deku," Katsuki grinned as Deku beaned up at him, cutting himself a slice and nodding with him. It had been two-and-a-half months since he had introduced the little kitchen into his and Deku's life.

Deku thrived in the kitchen, happy to follow the recipes Katsuki had found him. It was nice, seeing as the indigents were quite literally fresh off the stem, having been harvested before dinner. Sometimes, they'd cook side-by-side, creating the same dish to enjoy together.

Even though their portions were different, they still enjoyed it.

After they had finished their slices - with Katsuki taking a piece from the quiche he had baked for himself in a human-sized proportion - and the kitchen was cleaned, Katsuki carried Deku off to the bathroom.

While Deku floated around in the skin, his pudgy freckled belly looked awfully cute - Katsuki couldn't help the urge when it came to Deku's belly as he tickled it till Deku squeaked and squealed, trying to wade away from him - Katsuki brushed his teeth till they were shiny.

He helped Deku out of the sink, setting him on the cold porcelain. Katsuki chuckled as he watched Deku squeal and rush around, trying to find somewhere that wasn't as frigid as the porcelain.

Deku sent him a weary glance from his seat atop the crumpled sink towel Katsuki had

used to dry his hands. He couldn't help the fond rolling of his eyes as he poked at Deku's little squishy feet, feeling them latch around his finger as he waited for Deku to dry off. He then handed the sleepy little mouse his clothes, sadly unable to really dress the mouse

without hurting him. As much as he /wanted/ to, he didn't want to risk hurting Deku.

"All done, bub?" Katsuki hummed, letting Deku sleepily crawl into his palm, flopping against his calloused but warm skin. Deku peeked up at him through fluttering mossy lashes, nodding as he

snuggled into his palm. Katsuki pets the little bumps of Deku's spine through his little sleep shirt - a slightly oversized t-shirt with a skull, an almost exact replica of the one he was wearing - as he turns the bathroom lights off. His house was shrouded in darkness as the

blond walked to his bedroom, yawning as his sock-clad feet padded over the soft flooring, sitting down on the edge of his bed. "Y'wanna sleep in your bed, Deku?" Katsuki hummed as he watched Deku yawn loudly, snuggling into his hand as his little tail wrapped around his finger.

"N-Nu..." Deku whined, little feet latching against his textured skin. "Alright, alright," Katsuki huffed, using his thumb to pet at Deku's hair. "Time for bed," Katsuki rumbled as he slid into his bed, tucking himself into the covers as he yawned. He set Deku on his chest,

letting the little mouse burrow under the covers, lying splayed out on his chest, already fast asleep. Katsuki huffed as he petted Deku's delicate ears, feeling the little bits of fuzz tickle his fingers as he stared at the little mouse.

Each pet gains him a little wiggle of those big round ears, making the blond huff as he settles deeper into his mattress, yawning to himself as his finger continues to gently, almost absentmindedly, pet at Deku's back,

providing the little mouse with warmth as they both drifted off to sleep.

-
end. decided to post the second installation today :) i don't have a set schedule for posting the other two i have posted on ao3 but i may do every 2-3 days

ko-fi.com/tiredneedssleep

og ao3 link for rereading/bookmarking archiveofourown.org/works/45906112

https://twitter.com/tiredwrites/status/1645407869263654912?s=20