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1. Public Bookmark 31

   That's Amore~ |Mafiatale| Mafia tale sans| Sans x reader| by LittleMissCalamity

   Fandoms: Undertale (Video Game), Mafiafell - Fandom  

   • Explicit
   • Graphic Depictions Of Violence, Major Character Death
   • F/M
   • Work in Progress

   21 Jan 2024

   Tags

   • Graphic Depictions Of Violence
   • Major Character Death
   • Sans (Undertale)/Reader
   • Sans (Undertale)
   • Papyrus (Undertale)
   • Toriel (Undertale)
   • Asgore Dreemurr
   • Frisk (Undertale)
   • Undyne (Undertale)
   • Alphys (Undertale)
   • Monster Kid (Undertale)
   • Temmie (Undertale)
   • Mettaton (Undertale)
   • Napstablook (Undertale)
   • Muffet (Undertale)
   • Burgerpants (Undertale)
   • Fluff and Smut
   • Eventual Smut
   • Strangers to Lovers
   • Mafiafell Sans (Undertale)
   • Developing Friendships
   • Meet the Family
   • 1920s
   • Jealousy
   • Falling In Love
   • My First AO3 Post
   • Undertale Alternate Universes
   • No Incest
   • Plot Twists
   • y/n
   • Reader Is Not Frisk (Undertale)
   • confident reader
   • Bold lines
   • Gun Violence
   • Gang Violence
   • Blood and Violence
   • A big character does die
   • Not Sans or the Reader though.
   • BDSM
   • Femdom
   • Dom/sub
   • Switching
   • Praise
   • Degradation
   • Im a sucker for big submissive men
   • I Wrote This Instead of Sleeping
   • I will not be using a specific time
   • but it's gonna be based heavily on 1920s lifestyle and fashion
   • Soulsex
   • Papyrus and Sans and W.D. Gaster are Siblings? Question mark?
   • Brutality

   Summary

   Sans had recently moved to the surface with his brothers. He didn't have much of a problem with it, not much changed. But, one night while talking business with the city's Don, a little lady catches his eye...

   I'm writing this and going between the readers' pov, San's pov, and narration.
   Has since been edited and revised!

   Language:

   English

   Words:

   13,961

   Chapters:

   8/?

   Comments:

   37

   Kudos:

   139

   Bookmarks:

   31

   Hits:

   3,255

   Bookmarked by ComicSansLOL

   03 Nov 2025

2. Public Bookmark 9

   I'd rather have you by lili_cat

   Fandoms: Undertale (Video Game)  

   • Explicit
   • No Archive Warnings Apply
   • F/M
   • Complete Work

   27 Oct 2025

   Tags

   • No Archive Warnings Apply
   • Sans (Undertale)/Reader
   • Dusttale Sans / Reader
   • Sans (Undertale)
   • Female Reader
   • Established Relationship
   • implied mtt poly
   • Smut
   • Plot What Plot/Porn Without Plot
   • Teasing
   • Biting
   • Dirty Talk
   • Voice Kink
   • Praise Kink
   • Mutual Masturbation
   • Oral Sex
   • Face-Fucking
   • Sex Toys
   • Dom/sub Undertones
   • soft-ish dom dust
   • Enthusiastic Consent
   • we're being shamelessly needy for him
   • (he deserves it)
   • some more creative use of bone attacks
   • aka bone-fucking. a bone that fucks. a fuck-bone?
   • Smoking
   • one could say he's smoking hot...
   • Kinktober

   Summary

   He knew that you wanted him, and that your seemingly innocent teasing was an attempt to take charge, to take his control away from him.

   His sharp gaze told you that he wasn't going to let that happen so easily.

   // Kinktober 2025 – My take on the "sex toys / punishment" -prompt by skeletonh0e

   Language:

   English

   Words:

   7,094

   Chapters:

   1/1

   Comments:

   9

   Kudos:

   43

   Bookmarks:

   9

   Hits:

   538

   Bookmarked by ComicSansLOL

   27 Oct 2025

3. Public Bookmark 11

   Morning Cuddles (Underfell Sans x Reader) by SpookyConductor

   Fandoms: Undertale (Video Game)  

   • General Audiences
   • Creator Chose Not To Use Archive Warnings, No Archive Warnings Apply
   • Other
   • Complete Work

   09 May 2023

   Tags

   • Creator Chose Not To Use Archive Warnings
   • No Archive Warnings Apply
   • Sans (Undertale)/Reader
   • Sans (Undertale) & Reader
   • Sans (Undertale)
   • Underfell Sans (Undertale)
   • Fluff
   • Domestic Fluff
   • Fluff without Plot
   • Romantic Fluff
   • Interspecies Romance
   • Human/Monster Romance
   • Literal Sleeping Together
   • Relationship(s)
   • idk what im doing lmao
   • My First Work in This Fandom
   • My First AO3 Post
   • Cuddling & Snuggling
   • Sleepy Cuddles
   • Morning Cuddles
   • Skeletons
   • How Do I Tag
   • I'm Bad At Tagging
   • POV Third Person
   • Teasing
   • Gender-Neutral Pronouns

   Summary

   literally just what the title says!

   Language:

   English

   Words:

   791

   Chapters:

   1/1

   Comments:

   6

   Kudos:

   141

   Bookmarks:

   11

   Hits:

   1,247

   Bookmarked by ComicSansLOL

   16 Oct 2025

4. Public Bookmark 25

   Integrity (Sans Undertale x Reader) by xylocorpse

   Fandoms: Undertale (Video Game)  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • F/M, Gen, M/M, Other
   • Work in Progress

   10 Jul 2022

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Sans (Undertale)/Reader
   • Alphys/Undyne (Undertale)
   • Sans (Undertale)
   • Papyrus (Undertale)
   • Toriel (Undertale)
   • Asgore Dreemurr
   • Undyne (Undertale)
   • Alphys (Undertale)
   • Frisk (Undertale)
   • Chara (Undertale)
   • Friends to Lovers
   • Temporarily Unrequited Love
   • Sans Has Trust Issues (Undertale)
   • Self-Insert
   • Not Beta Read
   • Eventual Smut
   • Fluff
   • Angst and Romance
   • Semi Slow Burn
   • I LOVE SANS
   • Reader has a blue SOUL
   • babys first fanfic
   • reader is DESPERATE for the sansussy
   • this is more for me than it is for you
   • this is lowkey bunz
   • passion project from highschool dont judge me

   Summary

   2025 EDIT: this is actually so ass but yall keep asking me to finish it???? i will make new chapters soon, but i need to revamp this its so bad

   youre a young adult who helps monsters settle in on the surface because you’re incredibly lonely. how fun! One day in particular, you happen to be helping two brothers move in, which leads to.. a series of events. Thanks to persistent efforts, (by you) you find that your life is permanently marked with new faces and new events that you hope will be for the better.
   ....
   and what's wrong with having a huge crush on a skeleton along the way?

    

   ALL OF THIS IS A HUUUGE SELF INSERT LMAOOOO. i started writing this when i was 17 and still have the fattest juiciest crush on sans… gotta keep going. there is not enough love for classic on here. so now i have to do it myself. (but the reader being lowkey a loser is not me i am very cool irl trust)

   Language:

   English

   Words:

   14,592

   Chapters:

   4/?

   Comments:

   36

   Kudos:

   166

   Bookmarks:

   25

   Hits:

   2,989

   Bookmarked by ComicSansLOL

   16 Oct 2025

5. Public Bookmark 2

   "Too Cheesy" — Sans x Reader by simpertale (unfriendlysimp2)

   Fandoms: Undertale (Video Game)  

   • General Audiences
   • No Archive Warnings Apply
   • F/M, Gen, M/M, Multi, Other
   • Complete Work

   14 Apr 2025

   Tags

   • No Archive Warnings Apply
   • Sans (Undertale)/Reader
   • Papyrus (Undertale)/Reader
   • Sans (Undertale) & Reader
   • Papyrus (Undertale) & Reader
   • Sans (Undertale)/You
   • Papyrus (Undertale)/You
   • Sans (Undertale)
   • Papyrus (Undertale)
   • Reader
   • Fluff
   • Domestic Fluff
   • Bad Puns
   • Platonic Relationships
   • My First AO3 Post
   • Based on a Tumblr Post

   Summary

   All you wanted was a grilled cheese. To your dismay, there was no cheese.

   There were, however, cheese puns.

   Lots of them.

   Language:

   English

   Words:

   644

   Chapters:

   1/1

   Comments:

   2

   Kudos:

   41

   Bookmarks:

   2

   Hits:

   277

   Bookmarked by ComicSansLOL

   16 Oct 2025