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1. How Come I See You and Ache Instead? by COOLINGROSA1000

   Fandoms: Undertale (Video Game)  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • F/F
   • Complete Work

   17 Jun 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Sans/Sans (Undertale)
   • Sans (Undertale)
   • Error Sans (Undertale)
   • Dreamtale Nightmare Sans (Undertale)
   • Error Sans/Dreamtale Nightmare Sans (Undertale)
   • Suggestive Themes
   • Drunken Kissing
   • Drunken Confessions
   • They are DRUNK idk what to tell you
   • Angry Kissing
   • Making Out
   • slight angst
   • Error has a ego
   • Pre-Relationship
   • both are girls
   • Happy pride month it’s yuri season
   • not beta read be nice to me
   • Arguing but it’s low-key flirting too

   Summary

   “I am just as powerful as you are,” Nightmare seethes, voice inhuman. “I could crush you in an instant. I could bring as many AUS to dust as you.”

   “And yet, you do not. How pathetic of you. Why wouldn’t you try?”

   Nightmare laughs, half-hearted and guttural. “Because that’s your duty, isn’t it? What would become of us if I dared take over?”

   Error’s gut flips inside out, mind blurred with pink.

   “Us?”

   —

   Or, Errormare celebrates their new alliance with a trip to a bar. The alcohol brings out the worst, and potentially, something deeper.

   Oh and they are both girls.

   Happy bday inky teehee

   Series

   • Part 5 of Rosa’s Undertale Oneshots

   Language:

   English

   Words:

   3,431

   Chapters:

   1/1

   Comments:

   15

   Kudos:

   50

   Bookmarks:

   5

   Hits:

   303