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1. Papyrus's Special New Hobby by Gemini_Solstice

   Fandoms: Undertale (Video Game)  

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

   10 Sep 2026

   Tags

   • No Archive Warnings Apply
   • Flowey/Papyrus (Undertale)
   • Alphys/Sans (Undertale)
   • Alphys & Undyne (Undertale)
   • Papyrus & Sans (Undertale)
   • Papyrus & Undyne (Undertale)
   • Alphys & Papyrus (Undertale)
   • Flowey (Undertale)
   • Papyrus (Undertale)
   • Sans (Undertale)
   • Alphys (Undertale)
   • Undyne (Undertale)
   • Onionsan (Undertale)
   • Alphys and Sans are exes sorry
   • Put the relationship tag cause there's tension
   • Hentai
   • Masturbation
   • shaming? maybe
   • Voyeurism
   • NO FONTCEST
   • just sans trying to be a good role model
   • Awkwardness
   • Sex Talk
   • Second-Hand Embarrassment
   • Humiliation
   • onionsan mention only
   • sorry onionsan fans
   • Flowey Remembers Resets (Undertale)
   • Flowey (Undertale) Being an Asshole
   • Tentacles
   • vineplay
   • blowjob
   • Wait is it a blowjob if its vines
   • Papyrus is a freak
   • Makeshift Dildo

   Summary

   Undyne and Alphys try to lure Papyrus to the side of anime, only to accidentally show him something...explicit. This explicit material proves enticing to Papyrus, which starts a chain of events that ends up...his friends trying to set him up with Onionsan?

   Lots of awkward moments, cause I'm awkward, but also lots of smut. This took forever to write so I hope y'all like it.

   EDIT: I HAVE FIXED ONIONSAN'S PRONOUNS lemme know if I missed any

   Series

   • Part 7 of Somebody's Obsessed

   Language:

   English

   Words:

   13,690

   Chapters:

   8/8

   Comments:

   36

   Kudos:

   50

   Bookmarks:

   6

   Hits:

   447