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1. Two of a Kind, Can Make You Lose Your Mind♥ [BETA VERSION] by WhittneytheScorpionSuccubus for MeGaLoTrash, redtomatofan

   Fandoms: Undertale (Video Game)  

   • Explicit
   • Creator Chose Not To Use Archive Warnings, Graphic Depictions Of Violence, Rape/Non-Con
   • Other, Multi
   • Complete Work

   05 Feb 2023

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Graphic Depictions Of Violence
   • Rape/Non-Con
   • Papyrus/Sans (Undertale)
   • Papyrus & Sans (Undertale)
   • Papyrus (Undertale)
   • Sans (Undertale)
   • Alphys (Undertale)
   • Grillby (Undertale)
   • Undyne (Undertale)
   • Original Undertale Character(s)
   • Original Female Character(s)
   • Frisk (Undertale)
   • Chara (underswap)
   • Underswap Papyrus (Undertale)
   • Underswap Sans (Undertale)
   • Underfell Papyrus (Undertale)
   • Underfell Sans (Undertale)
   • Horrortale Papyrus (Undertale)
   • Horrortale Sans (Undertale)
   • Alternate Universe - Underswap (Undertale)
   • Alternate Universe - Underfell (Undertale)
   • Alternate Universe - Horrortale (Undertale)
   • Twins
   • Alternate Universe - Twins
   • Younger Brother Papyrus (Undertale)
   • Somnophilia
   • Non-Consensual Somnophilia
   • Dubious Consent
   • Non-Consensual Touching
   • Insomnia
   • Sleep Sex
   • Sleep Groping
   • Ecto-Tentacles (Undertale)
   • Ecto-Genitalia (Undertale)
   • Ecto-Penis (Undertale)
   • Ecto-Tongue (Undertale)
   • Ecto-Vagina (Undertale)
   • Tentacle Sex
   • Tentacle Rape
   • Body Worship
   • Water Sex
   • Shower Sex
   • fellswap
   • Alternate Universe - Fellswap (Undertale)
   • Fellswap Papyrus - Freeform
   • Vaginal Fingering
   • Fingerfucking
   • Challenge: Misleading the Masses
   • Slight Hentai-based Plotlines
   • Mutual Pining
   • Mutually Unrequited
   • Adult Frisk (Undertale)
   • Male Frisk (Undertale)
   • Romantic Rival Frisk
   • Pacifist Frisk (Undertale)
   • Alternate Universe - Canon Divergence
   • Slow Burn
   • Slow Build
   • Slow To Update
   • Alternate Universe - Stripper/Exotic Dancer
   • Alternate Universe - Fellswap Gold (Undertale)
   • Fellswap Sans (Undertale)
   • Fellswap Papyrus (Undertale)
   • Adult Chara (Underswap)
   • Underswap Chara (Undertale)
   • Adult Aliza (Horrortale)

   Summary

   Some good old Twins!AU "Fontcest"♥ As each of their respective universe "Sans" trying not to lose their shit around their adorable younger sibling(s)♥✨

   O~h the humanity!♥✨

   [[[Severe Canon Divergence: It's fontcest, bit it's also not fontcest, y'know? You'll find out as you read the story...]]]
   

   Series

   • Part 1 of Where are you sticking that bone attack, Step-bro/Onii-chan?<3

   Language:

   English

   Words:

   18,237

   Chapters:

   15/15

   Comments:

   46

   Kudos:

   98

   Bookmarks:

   17

   Hits:

   4,466