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. KFC becomes siblings by Laminated_paper_chain

   Fandoms: Deltarune (Video Game), Undertale (Video Game)  

   • Not Rated
   • Creator Chose Not To Use Archive Warnings
   • No category
   • Work in Progress

   20 Oct 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Noelle Holiday/Susie
   • Kris & Kris' Red Soul (Deltarune)
   • Chara & Frisk (Undertale) & Kris (Deltarune)
   • Chara & Asgore Dreemurr & Asriel Dreemurr & Toriel
   • Kris (Deltarune)
   • Chara (Undertale)
   • Frisk (Undertale)
   • Susie (Deltarune)
   • Toriel (Undertale)
   • Asgore Dreemurr
   • Dreemurr Family (Undertale)
   • W. D. Gaster
   • Sans (Undertale)
   • Noelle Holiday
   • Kris' Red Soul (Deltarune)
   • Asriel Dreemurr
   • Flowey (Undertale)
   • Ralsei (Deltarune)
   • FRIEND (Deltarune)
   • Flowery (Deltarune)
   • Aqua the Flower (Deltarune)
   • Seth the Flower (Deltarune)
   • Spamton G. Spamton
   • Jevil (Deltarune)
   • Family Fluff
   • Hurt/Comfort
   • Fluff and Angst
   • Found Family
   • Other Additional Tags to Be Added
   • Crack Treated Seriously
   • Canon Compliant
   • POV Multiple
   • Implied/Referenced Self-Harm
   • Angst
   • Selectively Mute Frisk (Undertale)
   • Deltarune Player Is Not Kris' Red Soul
   • Frisk (Undertale) Is a Sweetheart
   • Chara (Undertale) Needs a Hug
   • Chara (Undertale) Has Their Own Body
   • Chara (Undertale) Has PTSD - Post-Traumatic Stress Disorder
   • Kris Needs a Hug (Deltarune)
   • Noelle Holiday Needs a Hug
   • Susie is Trying Their Best (Deltarune)
   • Susie Needs a Hug (Deltarune)
   • Chara Needs Therapy (Undertale)
   • Selectively Mute Kris (Deltarune)
   • Autistic Frisk (Undertale)
   • Spamton G. Spamton Is A Mess

   Summary

   Kris wakes up to find two human children just chilling in their bedroom. That's odd. Somehow, not the oddest thing they'll see today.

   ~~

   Kris gets two little siblings from an alternate universe, both of which seem rather unusual.

   Language:

   English

   Words:

   42,020

   Chapters:

   14/?

   Comments:

   105

   Kudos:

   303

   Bookmarks:

   60

   Hits:

   6,241