Archive of Our Own ^beta

Random bookmarks

• Public Bookmark 28

  Heart and Soul by DinofelisSnow1985

  Fandoms: Undertale (Video Game)  

  • Mature
  • No Archive Warnings Apply
  • M/M, Other
  • Complete Work

  22 Dec 2025

  Tags

  • No Archive Warnings Apply
  • Cross/Nightmare
  • Cross/Everyone (platonic)
  • Cross
  • chara - Character
  • Frisk
  • Papyrus
  • Nightmare - Character
  • Dream
  • Error - Character
  • Killer - Character
  • Dust
  • Horror - Character
  • Fresh - Character
  • Geno
  • XGaster
  • Reaper(mentioned)
  • Xtale Sans | Cross (Undertale)
  • Male Chara (Undertale)
  • Male Frisk (Undertale)
  • Papyrus - Freeform
  • Dreamtale Nightmare Sans (Undertale)
  • Dreamtale Sans | Dream (Undertale)
  • Error Sans (Undertale)
  • Killer Sans (Undertale)
  • Dusttale Sans (Undertale)
  • Horrortale Sans (Undertale)
  • Fresh Sans (Undertale)
  • Aftertale Geno Sans (Undertale)
  • Reapertale Sans (Undertale)
  • Sickfic
  • Sick Character
  • Terminal Illnesses
  • Street Rats
  • Abduction
  • Found Family
  • Near Death Experiences
  • Not Really Character Death
  • Suicidal Thoughts
  • Suicide Attempt
  • Sad and Happy
  • XGaster is a Jerk
  • Medical Experimentation
  • Unethical Medicine
  • Unethical Experimentation
  • BAMF Cross

  Summary

  Cross develops a terminal Soul disease, but his father only cares about his own reputation as a stellar Medical Scientist and uses his son(s) as lab rat to find a cure.

  Series

  • Part 7 of Nightmare's Clan

  Language:

  English

  Words:

  15,956

  Chapters:

  25/25

  Comments:

  64

  Kudos:

  235

  Bookmarks:

  28

  Hits:

  5,161

  Bookmarked by JanusTheReader

  17 Feb 2026

  Bookmarker's Collections:

  • AUs