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1. Beware of darkness by nyxavatar (moonlessgown)

   Fandoms: Fire Emblem: Fuukasetsugetsu | Fire Emblem: Three Houses  

   • Explicit
   • Creator Chose Not To Use Archive Warnings
   • M/M
   • Complete Work

   28 May 2026

   Tags

   • Creator Chose Not To Use Archive Warnings
   • Dimitri Alexandre Blaiddyd/Sylvain Jose Gautier
   • Dimitri Alexandre Blaiddyd
   • Sylvain Jose Gautier
   • Felix Hugo Fraldarius
   • Dedue Molinaro
   • Alpha/Beta/Omega Dynamics
   • Friends With Benefits to Lovers
   • Breeding Kink
   • Background Relationships
   • Post-Canon
   • Sylvain Jose Gautier is a Fool
   • i just realised that's a tag
   • both of them are struggling
   • Love confessions in a way

   Summary

   “Yes,” he says softly, almost shyly, “Will… will you give me a baby this time?”
    
   The silence that follows that answer nearly deafens Sylvain. His heart thumps hard and fast in his chest. “Come again?”
    
   Seiros. As much as his ruts affect him, they had never made Sylvain utter something he absolutely didn’t mean.
   

   A longstanding supposed 'relationship of convenience' is challenged when Dimitri goes into heat.

   Language:

   English

   Words:

   10,352

   Chapters:

   3/3

   Comments:

   14

   Kudos:

   17

   Bookmarks:

   10

   Hits:

   170