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1. We’ll Be Right Back (After These Messages) by moonday_ghoul

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

   • Explicit
   • No Archive Warnings Apply
   • M/M
   • Complete Work

   10 Aug 2025

   Tags

   • No Archive Warnings Apply
   • Mettaton (Undertale)/Tenna (Deltarune)
   • Tenna (Deltarune)
   • Mettaton (Undertale)
   • Smut
   • Robot Sex
   • Size Difference
   • Size Kink
   • Puppy Play
   • Sub Tenna (Deltarune)
   • Trans Mettaton (Undertale)
   • Trans Male Character
   • Praise Kink
   • Fluff and Smut
   • Belly Rubs
   • just a lil bit
   • Tenna is sleepy and Mettaton wants to treat him
   • Pathetic Tenna (Deltarune)
   • Dry Humping
   • Cunnilingus
   • Coming In Pants
   • Collars
   • Mettaton puts Tenna on a leash
   • and its awesome
   • Past Spamton G. Spamton/Tenna

   Summary

   After a few months of hooking up, Mettaton's come to the conclusion that Tenna really is just a big puppy. So, following a difficult week at work, he decides to treat him like one.

   Series

   • Part 4 of Ghoul's Mettatenna Collection

   Language:

   English

   Words:

   5,409

   Chapters:

   1/1

   Comments:

   32

   Kudos:

   370

   Bookmarks:

   31

   Hits:

   3,808