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   Same You, Different Font by radskull69

   Fandoms: Undertale (Video Game), Deltarune (Video Game)  

   • Mature
   • Major Character Death
   • F/F, F/M, M/M
   • Work in Progress

   14 May 2026

   Tags

   • Major Character Death
   • Sans (Undertale)/Reader
   • Papyrus (Undertale)/Reader
   • Sans (Undertale)
   • Papyrus (Undertale)
   • Toriel (Undertale)
   • Frisk (Undertale)
   • Kris (Deltarune)
   • Alphys (Undertale)
   • Undyne (Undertale)
   • and probably more coming idk
   • Alternate Universe - Underswap (Undertale)
   • Alternate Universe - Underfell (Undertale)
   • Alternate Universe - Fellswap (Undertale)
   • Alternate Universe - Horrortale (Undertale)
   • Slow Burn
   • FOR MOST
   • Suicide
   • Grief/Mourning
   • Emotional/Psychological Abuse
   • reader is from another universe
   • reader is from deltarune universe
   • Sans is a Mess (Undertale)
   • haunting the narrative
   • Racism
   • Undertale Monsters on the Surface
   • reader uses they/them
   • male and female reader friendly smut chapters
   • Papyrus not being woobified
   • Friends to Enemies to Friends to Lovers
   • Reverse Harem
   • Bonely hearts club inspired skeletons
   • reader is frisks sibling
   • Temporarily Unrequited Love
   • Angst
   • Fluff
   • Hurt No Comfort
   • Possessive Sans (Undertale)
   • Polyamory
   • Toxic Behavior
   • human hate
   • Reader has a Green Soul (Undertale)
   • How Do I Tag
   • Reader is inspired off of Pink Diamond and Steven Universe
   • idk - Freeform
   • skeletons hating themselves
   • as they should - Freeform
   • Reader has braces
   • thats kinda it when it comes to their appearance
   • aside from clothes
   • deltarune monsters bleed
   • Sans is Having a Bad Time (Undertale)
   • Reader is girl failure
   • and boy failure
   • Reader’s just a failure tbh
   • cringe references
   • Autistic Reader
   • i think
   • im autistic
   • Selfcest
   • just a little
   • bros being bros
   • no incest!
   • Unreliable Narrator
   • sans has a sock fetish
   • Tsunderes
   • Yearning
   • Alcohol Abuse/Alcoholism
   • Horror
   • Eventual Smut
   • no smut yet
   • sorrryyyy!

   Summary

   Ah yes. The classic ‘’Heather’ convinces the skeletons you’re an evil human so now it’s a EVIL reverse harem’. Right?

   Oh? But what’s this? A TWIST?

   Sans couldn’t live with himself after what happened to you, going near insane after you’re gone. So behind the others back he uses the machine to undo what he did, except it didn’t. He can still feel his sins crawling on his back.

   Oh well, it’ll all be worth it once he has you back in his cold hands again. Screw the other skeletons.

   Language:

   English

   Words:

   88,517

   Chapters:

   10/?

   Comments:

   322

   Kudos:

   664

   Bookmarks:

   172

   Hits:

   13,516

   Bookmarked by Itriedbutfailed

   05 Mar 2026

   Bookmarker's Notes

   Ch7