AU Fontcest one shots

Underswap (smut... lots of it)

Sans was the hardest working monster around. He wanted into the Royal Guard more than anything. He particularly liked helping Alphys lift various things; Rocks, planks, ice, anything. You name it, he lifted it. Today, he was lifting planks with Alphys.
"Try picking these up, Sans!" Alphys called as she motioned to a pile of wood on the snow-covered ground. Sans nodded excitedly as he went to pick up the pile on the ground. It was quite heavy (like picking up his brother), but he did it anyways. He lifted the pile, and tried to walk. He heard a 'CRACK', and he collapsed, dropping the wood. He tried to stand up and recollect the wood, but his body went into shock. He couldn't move anything. He called for Alphys, but she left to Hotland. So, there he lay, motionless and helpless. He felt tired, and wanted to go to sleep, but he didn't. Papyrus was walking by the load site to go to the Shop.
"Papyrus! Help!" He sobbed and yelled. Papyrus noticed him and raced towards him.
"Sans, what happened?! Tell me everything!!" Papyrus said frantically as he teleported them home onto the couch. Papyrus was sitting up, holding Sans closely. He was moving his hand up and down Sans' back, when he found a spot that made Sans whimper. It was in the middle, twisted, and probably very uncomfortable for him. Papyrus lifted his brother's shirt and rubbed the twisted bone and hugged Sans close to him.

Sans could feel his brother's Soul beating against his chest. It was uneven and rushed, urgent, one could say. He knew Papyrus loved him more than anything in the world, and that he would do anything to help his brother. Sans enjoyed being held, and snuggled closer to his brother with every touch of the spine. Papyrus was rubbing in slow circles, when he touched a plate by accident.
"Aahh~" Sans moaned. He realized what he had just done and blushed a deep blue. Papyrus' face was painted with a light orange blush and he moved back to the spot he was rubbing before.
"Sorry Sans... It was an accident." Papyrus apologized and pulled his brother closer. Sans could move his neck and arms quite a bit, so with delicate caution, he pushed away from Papyrus to take his shirt off.
"You're forgiven, brother. Now that this is out of the way..." he moved back to Papyrus, who had laid down. Sans laid on top of him with the caution of his back and legs still not being fully functional. Papyrus started massaging his upper spine and lower spine, sometimes touching plates (purposefully, to make his brother moan). Sans was enjoying this, but he wouldn't say a word.
"P-Papyrus, can we move to somewhere... more comfortable?"
"Alright, Sans." Papyrus answered his question and carried him up the stairs to Sans' room. Papyrus set him down on the bed, sitting up.
"Papyrus, what are you doing?" Sans looked at him with a confused expression on his face. Papyrus didn't answer, but instead sat in front of Sans, straddled him, and started running his fingers up and down Sans' ribs. His eyes rolled backwards and he moaned loudly. Papyrus went back to massaging the lower spine, gently grinding their fronts.
"P-Paps... More... P-please!" Sans moaned, a faint teal glow, coming from his pants. Papyrus smirked and took his hoodie off. He put two fingers on Sans' clavicle and lifted his head up. He leaned towards his brother and opened his mouth. He stuck his tongue out, his brother doing the same. Sans licked Papyrus' tongue and they closed the empty space, tongues getting to work. Their tongues danced and fought for dominance. Papyrus won (quite obviously) and made Sans' mouth his to kiss, and his only. Papyrus kept grinding, a bit harder and faster this time.
"Are you sure you want this? You can save your virginity for somebody else."
"N-no, Papy... I want to be all yours, yours only..." Sans whimpered and tugged at Papyrus' waistband on his pants and tugged them off, then did the same to himself, leaving the two in their boxers. Papyrus pulled Sans' boxers off and his member sprung free from its cage. He grabbed Sans' member and started moving his thumb up and down the shaft, the rest of his fingers going the opposite way.
     "Ah... ngh... P-paps..." Sans moaned. Papyrus went even faster. "I-I'm gonna cum! Hah... aahh~" Papyrus' tongue trailed down Sans' chest and spine, ending at his member. With his hands still holding it, he put his mouth on Sans' glowing teal member and started sucking and slurping. He deep-throated and kept going.
     "Aah, Papyrus..." he moaned his brother's name as he came in Papyrus' mouth, Papyrus swallowing everything that went into his mouth. When Sans was done, Papyrus stood up.
    "What's wrong? Did I do something wrong?!" Sans sounded alarmed. Papyrus pulled off his boxers, and showed off his member to Sans.
     "P-papyrus, just fuck me... P-please!" Sans begged like a puppy. Papyrus pushed Sans onto his back and hovered over him.
     "Are you ready?"
     "Y-yes, Papy! Nnh..." Papyrus slowly thrust into Sans.
     "Are you okay?" Sans bit his lip(?) and whispered,
     "It hurt a bit, b-but I'm fine..."

     About 2 and a half hours later they got comfortable and under the sheets. Sans was completely mobile now, and was under Papyrus' chin. Papyrus was long asleep, and Sans wanted to try a couple things the Human and talked about they did on the surface. Sans reached down to his brother's crotch, which was now covered by his pants, and started rubbing where his member was. Papyrus moaned, rolled over, and went back to sleep. Sans kept up what he was doing, going faster every few seconds. Eventually, he couldn't take it anymore. He unzipped his brother's pants, and Papyrus' member was a few centimetres from his face. Sans licked up the shaft and put his mouth on his brother's dick. He sucked, and fapped his brother, and kept doing this for 3 minutes, until his brother held his head and started making him go faster, and deeper. Sans enjoyed every moment of it. Papyrus eventually came into Sans' mouth without warning. Sans swallowed every bit he could get into his mouth. When his brother was done, Sans surfaced from the sheets and went back to sleep.

THE FUCKING END. HOORAY. I'm kidding. There WILL BE MORE ONESHOTS! Requests are always taken! Also, I'm back to my old self, writing for 45 minutes at a time! the word count was 1069 words *insert Lenny face here* BYE!