koffin-k x reader fics because i am delulu for this man 😛

Series Metadata

Listing Series

• i’ll think of a title eventually trust me guys (KOFFIN-K X READER) by maxb_sco

  Fandoms: Undertale (Video Game)  

  • General Audiences
  • No Archive Warnings Apply
  • M/M, Other, F/M
  • Work in Progress

  18 Feb 2026

  Tags

  • No Archive Warnings Apply
  • Koffin-K (TS!Underswap - Team Switched)/Reader
  • Harry/Larry (TS!Underswap - Team Switched)
  • Koffin-K (TS!Underswap - Team Switched)
  • Reader
  • Harry (TS!Underswap - Team Switched)
  • Larry (TS!Underswap - Team Switched)
  • Crossbones (TS!Underswap - Team Switched)
  • koffin k is a zaddy 😛😛
  • Idiots in Love
  • (both pairings apply)
  • Gender-Neutral Reader-Insert
  • Alternate Universe - Underswap (Undertale)
  • Fangame: TS!Underswap - Team Switched (Undertale)
  • Reader Is A Monster (Undertale)
  • POV Second Person
  • No Use of Y/N for Reader-Insert
  • no beta we die like the boogiemen on ruthless
  • I'm Bad At Titles

  Summary

  You’re down on a job, and a house. You see an offering that promises it all, with people saying it gives all that too! But the guy sucks, apparently.

  But hey, how bad could it be?!

  Series

  • Part 1 of koffin-k x reader fics because i am delulu for this man 😛

  Language:

  English

  Words:

  2,153

  Chapters:

  3/?

  Comments:

  4

  Kudos:

  2

  Bookmarks:

  2

  Hits:

  58

• Captive Audience (KOFFIN-K X READER ONESHOT) by maxb_sco

  Fandoms: Undertale (Video Game)  

  • Teen And Up Audiences
  • No Archive Warnings Apply
  • F/M, M/M, Other
  • Complete Work

  18 Feb 2026

  Tags

  • No Archive Warnings Apply
  • Koffin-K (TS!Underswap - Team Switched)/Reader
  • Reader
  • Koffin-K (TS!Underswap - Team Switched)
  • Fangame: TS!Underswap - Team Switched (Undertale)
  • Movie Night
  • Gender-Neutral Reader-Insert
  • Hostage Situations
  • kinda stockholm syndrome but the feelings develop from a different thing so idk if it counts
  • Reader Is A Monster (Undertale)
  • Reader Is Not Frisk (Undertale)
  • Reader Is Not Chara (Undertale)
  • POV Second Person
  • fluff if you ignore the kidnapping
  • koffin-k is kinda drunk but hes definitely gonna remember this
  • No Use of Y/N for Reader-Insert
  • Use of Italicised "Oh."
  • probably kinda ooc
  • (less so at the start)
  • rated teen due to alcohol so it might become gen rated in the future idk
  • Kissing
  • maybe even making out
  • no beta we die like men
  • Wordcount: 500-1.000

  Summary

  You’re kidnapped by the DASTARDLY Count Koffin-K, until Crossbones inevitably comes and saves you the next day.

  On a 100% totally unrelated note, he really, and I mean REALLY wants to watch an old human movie he found in the garbage with someone, anyone.

  Surely these two events coinciding with each other won’t kickstart a relationship, right?

  Series

  • Part 2 of koffin-k x reader fics because i am delulu for this man 😛

  Language:

  English

  Words:

  800

  Chapters:

  1/1

  Kudos:

  1

  Hits:

  8

• koffin-k x reader headcanons because i genuinely have no idea anymore by maxb_sco

  Fandoms: Undertale (Video Game)  

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

  25 Feb 2026

  Tags

  • Creator Chose Not To Use Archive Warnings
  • Koffin-K (TS!Underswap - Team Switched)/Reader
  • Harry & Larry (TS!Underswap - Team Switched)
  • Koffin-K (TS!Underswap - Team Switched)
  • Reader
  • Harry (TS!Underswap - Team Switched)
  • Larry (TS!Underswap - Team Switched)
  • Fangame: TS!Underswap - Team Switched (Undertale)
  • headcanons
  • content warnings at the start of each chapter
  • Yandere
  • (◀️ there’s a chapter on it so im tagging it for exposure)
  • Trans Male Character
  • (again (comma) theres a chap on it so exposure tagging)

  Summary

  someone tell me how i fell for a fictional hat please

  Series

  • Part 3 of koffin-k x reader fics because i am delulu for this man 😛

  Language:

  English

  Words:

  930

  Chapters:

  4/?

  Kudos:

  1

  Hits:

  6