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1. The Second Fallen Human by Flameroin

   Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)  

   • Mature
   • Creator Chose Not To Use Archive Warnings
   • Other
   • Work in Progress

   17 Jul 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Chara (Undertale)/Clover (Undertale Yellow - Master Sword)
   • Chara & Asriel Dreemurr
   • Alphys & Chara (Undertale)
   • Clover (Undertale Yellow - Master Sword) & Asriel Dreemurr
   • Chara (Undertale)
   • Clover (Undertale Yellow - Master Sword)
   • Asriel Dreemurr
   • Asgore Dreemurr
   • Toriel (Undertale)
   • W. D. Gaster
   • Alphys (Undertale)
   • SOUL Mechanics (Undertale)
   • but a slight deviation from canon SOUL mechanics
   • Aged-Up Character(s)
   • Cocoapowder
   • Scientist Chara
   • Chara Has a Complex About Humanity
   • Likely Bastardized Depictions of Science
   • They/Them pronouns for Chara and Clover
   • POV Second Person
   • Alternate Universe - Canon Divergence
   • Other Additional Tags to Be Added

   Summary

   ❤️For the past six years, you have been living as the only human in The Underground. Over those six years, you have made a better life for yourself than you ever could've had on the surface. You work as an apprentice at the Royal Lab, play piano gigs on the side, and have the greatest family you could ask for. Everything is perfect. That is, until a second human falls.

   💛One month ago, your best friend disappeared when visiting Mt. Ebott to research the magic used to seal monsters away. After the search parties stopped and her family gave up hope, you decided to climb the mountain to find her yourself. One vine-snagged boot later, you find yourself in the Underground forced to make peace with your new life.

   Language:

   English

   Words:

   52,004

   Chapters:

   12/?

   Comments:

   40

   Kudos:

   96

   Bookmarks:

   10

   Hits:

   1,524