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1. Buoyant Bones and Shining Scales by Vienamarie (Witherby)

   Fandoms: Undertale (Video Game)  

   • Mature
   • No Archive Warnings Apply
   • F/M
   • Complete Work

   04 Jan 2017

   Tags

   • No Archive Warnings Apply
   • Sans/Undyne (Undertale)
   • Sans & Undyne (Undertale)
   • Sans (Undertale)
   • Undyne (Undertale)
   • Onion-san
   • Friends to Lovers
   • Swimming
   • Fluff and Smut

   Summary

   Sans teaches Undyne to skip stones. Undyne teaches Sans to swim.

   Language:

   English

   Words:

   13,914

   Chapters:

   2/2

   Comments:

   29

   Kudos:

   239

   Bookmarks:

   33

   Hits:

   3,830