Uf Sans X Reader - Tumblr Posts
Big Softie UF Sans x Reader
I am actually OBSESSED with soft red he has mentally headlocked me. I want him so bad 🙏 anyways here's another small drabble hope you enjoy.

You hummed softly to yourself as you stood in front of the sink washing the dishes you had let build up over the day. You squeaked in surprise when your hips were grabbed and pulled backwards into the skeleton standing behind you. He moves a hand back to get a handful of your ass and squeezes.
"hey doll, you got an inhaler cause you got that ass ma" You stand in shock for a few seconds before bursting out into laughter and turning around to face your dork of a partner
"Red I think that was the worst one I've heard yet" his eye crinkle and he looks at you as if that's a challenge.
"i heard the word of the day is legs, wanna head to the bedroom and spread the word?" You snort at that one and roll your eyes wrapping your arms around his neck as you gaze up at him."are you a globe because I- mf" you shut him up with a kiss and he melts into it in a quick few seconds. He trys to deepen it but you pull away and he playfully glares at you but his face is slightly flushed.
"You're so handsome," He tenses slightly and stares at you in confusion.
"wha?" You press a kiss to his jawbone.
"And funny," he starts to flush a brighter shade of red as you press a kiss to his cheekbone this time. "And intelligent when you want to be," another kiss and a brighter blush. This continues one for a few more moments before you have your own form of red light glowing in the kitchen as the source of said light basically melts into you. You chuckle as he purrs against you nuzzling into your neck and holding you against him tightly. "I love you." you whisper into the side of his skull and his grip on you tightens.
"sweetheart you make my soul feel complete." He mutters into your neck before placing a kiss there. You sigh contently and rub his spine through his jacket as he leans against you, what a softie.
Legs, Tits, Or Ass with UT,UF,US!
The question of the hour y'all! This one was fun surprisingly I had the most trouble with Blue! Hope you enjoy! Put it under the cut because it was slightly horny then decided to run with it lol

Undertale:
Sans: Legs, 100%. There's just something about them that gets him going. He wants to massage your feet and kiss your ankles before being buried in your thighs as he eats you out. Squish his skull between those legs he loves it. Is one for more gently caressing them with a loving look but bites on occasion.
Papyrus: This is a tough one Papyrus would definitely be one to say personality and that's true but if it came down to it boobs. He likes how squishy they are and enjoys watching them bounce as he fucks into you.
Underfell:
Red: Ass. Assman all the way. He can't get enough it's so squishy and jiggly and he's hypnotized literally anytime you walk by him. Holds the door for you just so he can see you walk in front of him. A chromic ass slapper no NOT turn around or bend over in front of him unless you're ready to get that thang smacked. Will turn himself on simply from watching your ass as you walk around and pull you into the nearest closet/teleport home to work off some steam. This happens at least once a day where he gets himself too horny. Has tons of pictures of you bent over. He's pretty quick and perch with his camera. If hate to watch them go love to watch them leave was a person. He
Edge: Legs! He enjoys something about legs and thinks they have a certain elegance to them. Long legs, short legs, thick or thin. He's an enjoyer of the legs and loves to mark your legs up with his sharp fangs. Enjoys having your legs wrapped around him or over his shoulders most though. He likes seeing all the different positions he can move them into while having sex.
Underswap:
Stretch: Boobs. He likes the squish as well and enjoys watching them bounce and move naturally. If you have some he'll treat them like a stress ball and absentmindedly squeeze them while doing others things. He enjoys watching them bounce when you ride him. Also a huge nipple teaser he likes to latch on with his teeth and pull gently.
Blue: Boobs! Also a boobs man he loves how squishy and jiggly they are. He likes to nibble on them and enjoys the squish between his teeth. Expect your chest to be full of bite marks if he has access to it. Likes seeing the different ways he can make them bounce with the different positions. He likes cumming on your chest and watching it drip down. He enjoys laying his head on them as a pillow and listening to your heartbeat.
How they act when crushing UT,UF,US!
This one was fun I might do a part 2 eventually because I love how people change their behavior while crushing on someone think next is gonna be confession head canons or a drabble. Anyway requests are open! Just wanted to put that out there I love getting them ::> and I'm pretty open to writing most things I love getting different inspo from different people. Anyways I'm done rambling hope y'all enjoy!

Undertale: Sans: Trys to make you laugh as much as possible. He loves hearing your laughter and is super proud when he can get you to full on laugh with his shitty jokes. He's a daydreamer and often daydreams about you when it's slow at work or he's in bed alone. He won't admit how nice he sleeps when he sees you in his dreams. You motivate him to get out of bed easier on days he gets to see you so that's a plus
Papyrus: He likes to be around you as much as he can. Like doing menial things together?? Oh you have a doctor's appointment, sure why don't I come and we get lunch afterwards. He just likes spending time with you! "Accidentally" making too much food for meals so he has a reason to see you and make sure you're eating something.
Underfell:
Red: Heavy denial before reluctantly accepting. He's a flirty guy he thinks it's all fun and games until he's thinking about you at 3 am with a blush in his face imagining a future and doing cute relationship things with you. He knows he's fucked. He doesn't really believe someone would like him so from his perspective it's one sided attraction all the way and that hurts. He still flirts but it kinda hurts him inside too. Teasing himself with something he thinks he'll never have. He doesn't distance himself but he's a bit rougher maybe trying to scare you off a tad.
Edge: Denial worse than his brother. He doesn't have time for crushes or anything of the sort. It's improbable that he does like you that way anyways it's just a passing attraction he simply likes the way you say his name, and the way your legs look when you walk and stretch out, and oh … He's fucked. He'll continue to deny it to himself until someone ,most likely his brother or his version of Undyne, points it out. Then he's trying to hide it, trying to play it off. The passing touches he lets linger too long, how even though his days are scheduled he still somehow ends up running into you occasionally.
Underswap:
Stretch:We got another daydreamer and he's 50/50 with risque and wholesome daydreams. He finds any excuse to touch you and let's the touches linger. He's flirty and loves if you flirt back, kind of easy to fluster flushing a gorgeous marigold shade as he nye he he's. He invites you over for gaming or movie nights, wanting to share his interests with you and find some shared interests in shows and such. He definitely has written a song about you that he keeps hidden in a folder in his closet. There's a doodle of you on the back of the page and he's a little embarrassed of it.
Blue: He can tell when he likes someone like that he's pretty intune with his emotions. He likes to hang around you taking time out of his day and dedicating it specifically to you. He writes you little notes and reminders and hides them around your space to find, knows where you hide when you're sad and hides a bunch there. He blogs about you on occasion never mentioning your name but simply writing about you. He likes to find two player games for you two to play together mainly team working puzzle ones.
SO on period UT,UF,US,HT!
Ive had this sitting in my notes for awhile wasn't super proud of it still ain't but I wanted to post something, I just had to slap the HT brothers on and boom new post.
Also I've been wanting to write swapfell but I don't know the difference between that and fellswap or really their personalities cause it's so different for each fanfic so if someone could pls explain 🙏
Anyways here y'all go hope you enjoy!

Undertale:
Sans: I feel like sans is pretty knowledgeable so you didn't have to explain it to him. He takes it pretty maturely it's a natural part of life. The puns the horrible puns. He has so many specifically for this time of the month. He's always got your comfort snack on hand in his jacket pockets. He doesn't really change much he'll get off his ass if you ask him to but he sticks by your side mostly and lazes out cuddled with you while watching shows. Pretty good at getting products and snacks you might like he likes to get you some new snacks to try with him and he's good at guessing what you might like.
Papyrus: This man is prepared. After you tell him what it is he researches it and WOWIE he wishes he just asked you to explain but now he's over prepared with knowledge! He has hot water bottles and weighted blankets at the ready. Any snacks you want, heck you want a whole meal? He's on it and it's prepared with extra love. He carries around your products for you and always has pain medicine in his bags. Pretty good at picking them up from the store too and has no shame getting them.
Underfell:
Red: You gotta explain it to him and this man is bewildered for a bit. ya bleed from there for how long??? every month?! He's a little impressed?? Last he checked humans weren't supposed to lose huge amounts of blood but you're treating it like it's a normal thing. After he gets over his initial shock he'll try and help the best he can which is a little awkwardly. He makes a little nest for you out of blankets and pillows and makes sure you're comfortable. He and his magic run warm so he'll lay on your stomach and cuddle to help with cramps, pet his head and he might purr. He's pretty confused about products def one to send Babe what's your pussy size.
Edge: He's aware, he's done his research on his own when you were ovulating about the human "mating cycle". Not a fun experience but he takes it in stride. He listens to what you need and trys to deliver. Massages for sore muscles and heating pads for cramps. He'll make you comfort food while you relax watching a show and join you afterwards for some cuddles. He's pretty good at getting products for you and takes the ones you like into consideration but he's always looking for better healthier alternatives for you.
Underswap:
Stretch: Knows about it (blue taught him when he found out and Stretch showed interest in humans)and is a little awkward(traumatized from the talk with Blue). Hate to say it Stretch doesn't really know what to do he's not grossed out he just doesn't know how to handle it. He tries his best to be comforting giving snacks, heating pads, and cuddles. He's so awkward going to the store to get products plays it cool but has no idea what he's doing and definitely gets the wrong thing after his mind blanks while staring at all the products for too long. You just gotta train him he'll get better.
Blue: Also knows and he's handling it alot better. He takes it in stride and understands the biggest part is you're uncomfortable and he's going to do his best to help with that. He takes care of chores you don't want to do, makes you comfort meals, and always has a heating pad ready. Has so many two player comfort games lined up for you guys, he has stuff to do but most of his work stuff can be done at home! Which means he'll just be a shout away if you need anything . Pretty good at getting products and is one to carry some around in his bag just in case when you guys go out.
HorrorTale:
Axe: You have to explain it to him… Multiple times. He's confused as to why you smell like blood, he likes the smell but he's confused for a bit until he writes a note about it. He will not remember which products to get unfortunately. He's so confused staring at them you'll have to instruct him very clearly over a call and he still probably grabs the wrong one. Cuddles are supreme he's a giant so he'll engulf you in his form and his purrs practically shake your whole body. It's like a free massage chair whenever you want. He sticks closer by your side during this time of month knowing blood means your wounded and his protective urges flare up.
Willow: You'll also have to explain it to him and he's extremely worried when he smells blood. Even more so when he learns how long you bleed, he knows how much blood a human can loose and it worries him you're losing so much. After you explain it's a normal thing and a part of life he calms down slightly. He cleans and cooks a lot when stressed or worried so you constantly have something to munch on and you don't have to worry about any chores. He stays over stocked up on supplies, he doesn't like going out in public very often but for this he will because he deems it important enough. It's why he stocks up so much when he goes out. Mother hens over you hard and you might have to pull him into cuddles to get him to relax for a bit.