Sans POV
I called Alphy and told her that it wore off. I was laying on the couch and Frisk, Chara, and Papyrus are playing tag then Toriel came to pick them up. "Coming Mom!" Frisk and Chara yelled running downstairs and jumping into Toriel's arms she said goodbye and left. "Bye kids." They waved goodbye and Papyrus came up to me picked me kissed me and put me on his lap. "Hey Sans wanna do something?" I thought for a second and Papyrus was already kissing my sweet spot. I moaned and gripped his shoulders. He grabbed me by my waist and lifted me up the stairs. He layed me down on the bed and climbed on top of me he kissed my neck then went down my ribs teasing me. "Ngh Papy stop Aah~ teasing me!" He chuckled and rubbed my spine going up and down causing me to moan his name loudly. "Papyrus!" He stopped and ripped off my clothes and took of his he flipped me over on my stomach. "Are you ready Sans if you're not I can-" "I'm ready Papy." He thrusted into me carefully shooting pleasure into me. "Papyrus harder faster!" He did so I moaned at each thrust as it was faster and harder I was reaching my climate and so was Papyrus since the thrust were now slower. "Papyrus I think I'm gonna-" I released blue semen spilled on the bed. Then Papyrus released the feeling of his seed filling me up was pleasure. I relaxed on the bed feeling a lot more tired than before. I fell asleep on the bed.
Papyrus POV
I think I did a good job hm he's asleep might as go too.
The next day cuz I lazy~
Papyrus POV
I woke up bright and early I looked at Sans as usual. He was covered in seed I don't want to wake him up he looks so adorable and peaceful but he's pretty dirty. I got up and took a shower wierd thing is I was thinking of him the whole shower. I came back and put on some clean clothes then shook him awake "Ngh what bro?" He rubbed his eyes tiredly "Sans go take a shower you're covered in seed." He looked at himself then lazily walked to the bathroom and shut the door I flipped the bed over and took the dirty sheets and blanket to the laundry basket. I put on new sheets and a blanket over it and air freshen the bed. Sans came out with clean clothes and slippers. "Bro what's for breakfast?" I picked him up and carried him downstairs I put him in the chair at the table and started to make breakfast. ~A few minutes later~ I finished making it and put the food on two plates I gave Sans his and we started eating it.
Sans POV
I ate but couldn't help but stare at Papyrus I finished and went upstairs and sat on my bed thinking about him then a portal opened up "What the?" I walked up to it and something shot out of it pinning me on the floor kissing me. It looked like another ver of me I couldn't really say anything cause it's mouth was on mine. I mumbled "Um can you get off me?" I noticed it didn't pay attention cause it slithered it's tongue on mine and explored my mouth. "You're really submissive pet." It said and smirked he summoned cat ears, a tail, a collar, and a leash on me. That made me really uncomfortable he grabbed the leash and stood up "Meow to me bitch." I got scared "M-meow." He smirked and tugged on the leash I crawled on all fours embarrassed "You see pet I would bring you home with me but my fucking brother will yell at me. So I'm gonna leave you here but I will be back. He made the stuff disappear and left. I sat there dumbfounded "Who was that?"
------------------------------------------------------ Dun dun dun! Please leave in the comments who the mysterious person is I personally know it but I wanna see if you know it ps the next chapter will be mPREG
Ciao