I dunno some Undertale au lemon shit

Kustard/ heat session

Warnings: biting, scratching, screaming, BJs, and ya know PUBLIC SHIZZ. Well for the first half at least. By the way they live together.

~~~~Fell's POV~~~~

Sans and I were just chilling on a park bench before she practically jumped on my lap. I flinched and looked at her. "Uh what's up babe?" I asked while blushing slightly. She leaned closer and kissed me. I softly held her hip bones as I kissed her back. Her bones felt extremely warm as she pressed herself onto my pelvis. I pulled away slightly and looked at her. "Fell I need your help." She said as her face turned bright blue.

"Uh sure. With what?" I asked while tilting my head slightly. "I'm in heat." She whispered seductively. I looked around to see if anyone was coming then sighed. Sans' skull was a soft blue as she leaned on me. I rubbed her skull softly as I huffed lightly. "Fine, but we have to be quick about it. I don't want to get caught." I mumbled while leaning back slightly.

Her skull lit up quickly as she got on her knees in between my legs. She softly tugged at my shorts before pulling them down along with my boxers. I watched her as she gently grabbed my semi hard member. "I'll try to make it quick." Sans mumbled before softly licking up the length of my member. I flinched slightly at the feeling before shivering softly. She slowly took my entire length in her mouth making me moan before I covered my mouth.

"Fuck babe..." I whispered as I tried to contain myself. Sans looked up at me while she slowly bobbed her skull. I tilt my head back and moaned a little louder still covering my mouth. I gently grabbed her skull and softly thrusted into her mouth. "Holy shit~" I moaned as I felt myself getting close. I sat up a bit while Sans continued to shove me deeper in her throat. I flinched slightly as I came with a soft moan. Sans swallowed a majority of it but some began to drip from the corners of her mouth. When she sat up she licked her teeth before sitting on my lap.

Sans would often wear a skirt or shorts. Today she chose a skirt so she reached under it and pulled her panties to the side. I grab her hip bones and gently rubbed my still throbbing member against her entrance that was steadily dripping. She lowered herself onto my lap and moaned before I covered her mouth. "Shhhh." I shushed her quietly as I pressed my pelvis against her ass. She moaned into my hand as she started to bounce on my lap slowly. I gently hug her hips as I thrust into her a little. Sans put her hand over mine as she started riding me faster. Suddenly she stopped and turned around so she was facing me.

I've never seen her look so lusty before. Her right blue eye light took the form of a heart. She lowered herself onto my lap again and wrapped her arms around my neck. I lean against her and bit her exposed neck bones. I could feel myself getting close again. She started at squirm around and buck her hips slightly. I growled softly and teleported us home. I gently ripped her clothes off as I continued to thrust into her. Her moans got louder as she covered her face.

"Don't hide your cute little face babe~." I smirked as I lifted her legs up by her thighs. Sans reluctantly moved her arms so I could see her face. While she had her face covered I also took my clothes off as well. Her warm ecto flesh felt so soft against me. I smirked down at her as she wrapped her arms around my neck again. I could hear her starting to pant. "Baby...m-more~!" She cried out. I chuckled lowly and leaned down before biting her neck again. She slowly started to drag her sharp fingers against my bones. I grunted softly and bit her neck more. "FELL HOLY SHIT RIGHT THERE~!" Sans suddenly yelled.

I smiled and thrusted against that spot more. Suddenly she got tighter as her moans changed. I smirked a bit then thrusted faster. The bed started rocking due to how fast and rough I was. I leaned down and kissed her softly while still thrusting into her. Our bodies got hotter by the second. Sans started clinging to me tightly while screaming my name. She started scratching her fingers against my bones leaving small red lines on them. I shivered slightly as my thrusts got sloppier. I grunted softly before biting her exposed neck. "Fuck Sans ~ I think I'm gonna cum~" I moaned out against her neck.

I felt her legs wrap around my waist making me pull back and look at her. She looked like she was in a daze. Her skull was glowing blue and her eye light was still a heart. I looked down and saw her soul giving me an idea. I reach under her ribcage and grab her heart shaped soul making her flinch. "F-Fell hold on~!" Sans squealed as I pulled her soul out and licked it. It tasted a little bit like mint. I loved it. I gently bit her soul as I thrusted harder. Sans suddenly started screaming my name so loud we probably would get noise complaints. Still holding her soul between my teeth I grabbed her hips and forced myself deep into her as I came.

Her long ecto tongue dangled out of her mouth as she drooled and came with me. When we came down from our highs I chuckled a bit at how tired she looked. She looked up at me and smacked the top of my skull softly. "Shut up!" She huffed quietly before letting out her beautiful giggle. I hugged her tightly after giving her soul back. "Feel better?" I asked while laying next to her. "Much better, thanks." She mumbled as she cuddled into me.

~~~~1018 words~~~~