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1. Back When They Still Lived On The Surface by gaylie

   Fandoms: Undertale (Video Game)  

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

   06 Jan 2018

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Grillby/Sans
   • Asgore Dreemurr/W. D. Gaster
   • Mettaton/Sans (onesided)
   • Asgore Dreemurr/Toriel
   • Grillby/Muffet (past)
   • KingDings - Relationship
   • Sansby - Relationship
   • Sans (Undertale)
   • Papyrus (Undertale)
   • Grillby (Undertale)
   • Asgore Dreemurr
   • Mad Dummy (Undertale)
   • W. D. Gaster
   • Whiskers&Snoots (Gasterblasters)
   • Mettaton (Undertale)
   • Napstablook (Undertale)
   • Linda
   • from the PTA AU
   • yea you heard me right
   • Muffet
   • Undyne
   • Toriel
   • AU
   • full of headcanons
   • Fluff
   • Angst
   • im bad at fanfictions
   • Mettaghost
   • Gaster is Sans&Papyrus' dad
   • Alcoholism
   • underaged drinking
   • physical fights/violence stuff
   • a lot of underaged things really
   • Sansby will be at age 16/17
   • Kingdings will be around age 20/40
   • Gasterblasters
   • Petblasters
   • Depression
   • Hurt and comfort
   • I accidentally made Mad Dummy male
   • Suicidal Thoughts
   • Minor Character Death
   • Murder
   • Underaged Smoking
   • Bullying
   • slowburn
   • like super slow
   • Major Character death?
   • Self Harm
   • ecto parts
   • Made Up Science
   • lowkey yandere grillby
   • Suicide Attempts
   • Rape/Non-con - Freeform
   • Soul Sex
   • Drugs
   • Date Rape Drug

   Summary

   What if all the monsters we got to know still spent their childhood on the surface, before the war happened? What if Sans used to be really fucking edgy as a 15 year old teenager? What if he managed to get chummy with a group of bad-boys that aren't exactly the best influence on him?
   What if I were actually good at writing summaries?

   Number of smut chapters: 9

   Series

   • Part 1 of bwtslots

   Language:

   English

   Words:

   394,784

   Chapters:

   124/124

   Comments:

   1,874

   Kudos:

   1,551

   Bookmarks:

   74

   Hits:

   34,735