Adult Content Warning

This work could have adult content. If you continue, you have agreed that you are willing to see such content.

• Yes, Continue
• No, Go Back

If you accept cookies from our site and you choose "Yes, Continue", you will not be asked again during this session (that is, until you close your browser). If you log in you can store your preference and never be asked again.

1. 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

   21 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)

   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:

   826

   Chapters:

   3/?

   Kudos:

   1

   Hits:

   5