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1. Promised by Xx_Aconite_xX

   Fandoms: Undertale (Video Game)  

   • Explicit
   • No Archive Warnings Apply
   • M/M
   • Work in Progress

   02 Oct 2025

   Tags

   • No Archive Warnings Apply
   • Sans/Sans (Undertale)
   • Papyrus/Sans (Undertale)
   • Papyrus & Sans (Undertale)
   • Sans & Sans (Undertale)
   • Sans (Undertale)
   • Papyrus (Undertale)
   • Alphys (Undertale)
   • Undyne (Undertale)
   • Flowey (Undertale)
   • Underfell Sans (Undertale)
   • Underfell Papyrus (Undertale)
   • Sans/Underfell Sans (Undertale)
   • Underfell Undyne (Undertale)
   • Underfell Flowey (Undertale)
   • Underfell Alphys (Undertale)
   • Alternate Universe - Underfell (Undertale)
   • Arranged Marriage
   • Post-Undertale Neutral Route - King Papyrus Ending
   • No More Resets (Undertale)
   • Dubious Consent
   • Judge Sans (Undertale)
   • King Papyrus (Undertale)
   • Sans (Undertale) Needs a Hug
   • Sans Knows About Resets But Doesn't Remember Them (Undertale)
   • Sans Angst (Undertale)
   • Sans Gives Up (Undertale)
   • Sans Gets A Hug (Undertale)
   • Sans Has Trust Issues (Undertale)
   • Sans has Nightmares (Undertale)
   • Sans Has 1 HP (Undertale)
   • Sans Has Chronic Pain (Undertale)
   • Sans Has Patience (Undertale)
   • Sans Has a Tail (Undertale)
   • Sans is a Mess (Undertale)
   • Sans is Bad at Feelings (Undertale)
   • Sans is Not Okay (Undertale)
   • Sans is Having a Bad Time (Undertale)
   • Sans is So Done (Undertale)
   • Sans is a Tease (Undertale)
   • Sans is Good With Kids (Undertale)
   • Slow Burn
   • Sans Makes Bad Decisions (Undertale)
   • Sans Needs Therapy (Undertale)
   • Sans Needs a Break (Undertale)
   • Sans Needs Help (Undertale)
   • Underfell Sans Swears (Undertale)
   • Sans Tries (Undertale)
   • Sans Wears a Dress (Undertale)
   • Queen Sans (Undertale)
   • Prince Sans (Undertale)
   • Skeleton Pregnancy (Undertale)
   • Skeleton Sex (Undertale)
   • Ecto-Genitalia (Undertale)
   • Ecto-Penis (Undertale)
   • Ecto-Tongue (Undertale)
   • Ecto-Vagina (Undertale)
   • Ecto-Body (Undertale)
   • Ecto-Breasts (Undertale)
   • Ecto-Tentacles (Undertale)
   • Size Difference
   • Panic Attacks
   • Power Imbalance
   • Hurt/Comfort
   • Emotional Hurt/Comfort

   Summary

   The king has fallen.

   In the devastation left in the human's wake, a new king is needed. Papyrus steps up to the challenge, assisted by his brother.

   Sans is sworn to obey the crown, bound by the Delta Rune. Regardless of who wears it.

   But when dark alternates show up and threaten war, Papyrus has to make the hardest decision of his life, and Sans finds out the chains that bind him might not be as secure as he'd like.

   Language:

   English

   Words:

   2,661

   Chapters:

   2/?

   Comments:

   3

   Kudos:

   25

   Bookmarks:

   4

   Hits:

   227