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1. Untamed Sentiment by Mercy_Run for TDoompoet

   Fandoms: Undertale (Video Game)  

   • Explicit
   • Creator Chose Not To Use Archive Warnings
   • M/M
   • Complete Work

   18 Sep 2022

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Papyrus/Sans (Undertale)
   • Sans/Sans (Undertale)
   • Papyrus (Undertale)
   • Sans (Undertale)
   • Frisk (Undertale)
   • Toriel (Undertale)
   • Undyne (Undertale)
   • Alphys (Undertale)
   • Mettaton (Undertale)
   • Asgore Dreemurr
   • Humanity (Character)
   • Undertale Monster(s)
   • Alternate Universe
   • Undertale Monsters on the Surface
   • Post-Undertale Pacifist Route
   • Alternate Universe - Underfell (Undertale)
   • Alternate Universe - SlaveTale (Undertale)
   • Post-Undertale Pacifist Route - "I want to stay with you."
   • Angst and Feels
   • Racism
   • Alpha/Beta/Omega Dynamics
   • Cultural Differences
   • Scent Marking
   • Courting Rituals
   • Mating Cycles/In Heat
   • Rutting
   • Mpreg
   • Polyamory
   • Smut
   • Size Difference
   • Double Penetration

   Summary

   When Queen Toriel had announced unexpected guests, Sans hadn't realized just how unanticipated the monsters truly were. The skeleton knew they were an anomaly, rougher versions of himself and his brother. What he hadn't expected was both of them to be Alphas. To top it all off, Edge and Red seem to be very interested in courting him, a rare Omega.

   Welp, this was going to be a fascinating experience. It's not like Sans wasn't already keeping an eye on the tentative peace Frisk was brokering with the humans. Sans would entertain the odd notion. It's not like anything could come out of it, right?

    

   _____

   -Undertale/Underfell Universe merged with a SlaveTale flavor.-
   -Polyamorous Spicykustard-
   -This was requested by the lovely TDoomPoet on Twitter!-

   Language:

   English

   Words:

   49,055

   Chapters:

   30/30

   Comments:

   327

   Kudos:

   649

   Bookmarks:

   125

   Hits:

   15,943