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. The Knight & Poison by Ican_English

   Fandoms: Undertale (Video Game)  

   • Mature
   • Graphic Depictions Of Violence
   • M/M
   • Work in Progress

   20 Jul 2026

   Tags

   • Graphic Depictions Of Violence
   • Sans/Sans (Undertale)
   • error/cross
   • Cross/Error
   • Crerror
   • Cross Sans/ Error Sans
   • Error Sans (Undertale) - Character
   • Xtale Sans | Cross (Undertale) - Character
   • Alternate Universe - XTale (Undertale)
   • XTale W. D. Gaster
   • X-Gaster - Freeform
   • Alternate Universe - Errortale (Undertale)
   • Error Sans Used to be Aftertale Geno Sans (Undertale)
   • Error Sans/Xtale Sans | Cross (Undertale)
   • Restraints
   • Tension
   • Canon-Typical Violence
   • _____tale Sans | Ink (Undertale)
   • Ink sans mentioned - Freeform
   • idk if Ink's going to be in this one
   • Underverse
   • Watch Underverse season 2 bro
   • It'll help this make sense
   • I'm not explaining underverse to yall
   • Alternate Universe - Canon Divergence
   • Alternate Universe - Aftertale (Undertale)
   • Slow Burn
   • hohohohehehehe
   • Injury Recovery
   • Hurt/Comfort
   • Angst
   • Error Sans Has Issues (Undertale)
   • Error sans is an asshole (Undertale)
   • Cross sans has the heart of a knight (Undertale)

   Summary

   Error finds himself literally in the clutches of the ever-scheming X-Gaster, who appears to be in the middle of taking over the original Timeline. The residents of X-tale wait for their leader's command as they watch X-Gaster interrogate the Destroyer of Universes.

   -

   Error / Cross

   (Tags will be updated overtime)

   Language:

   English

   Words:

   9,269

   Chapters:

   4/?

   Comments:

   12

   Kudos:

   29

   Bookmarks:

   11

   Hits:

   517