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   Conjunx Bellum (the shape of devotion) by Fluff_Off for ConCentric

   Fandoms: Transformers - All Media Types  

   • Explicit
   • No Archive Warnings Apply
   • M/M
   • Work in Progress

   14 Feb 2026

   Tags

   • No Archive Warnings Apply
   • Megatron/Optimus Prime
   • Marriage of Convenience
   • Gentle Sex
   • Smitten Megatron
   • BAMF Optimus Prime
   • Conjunx Bellum
   • Mutual Pining
   • Soft Feels
   • Falling In Love
   • Found Family
   • Oathpaint (because even Primus ships it)
   • Unrepentant smut in ch 2 then sloooow burn
   • Cult of Unicron
   • Post-War
   • Enemies to Friends to Lovers
   • Forced conjunx to actual conjunx
   • Mildly Dubious Consent
   • (Optimus says ‘yes’ but still…)
   • What happens when your Conjunx is the Chosen One

   Summary

   Megatron takes Optimus Prime as his conjunx bellum to end the war.

   He doesn’t expect trust.
   He doesn’t expect love.
   And he definitely doesn’t expect the gods to take notice.

   For the first time since the war’s end, Megatron feels the familiar sinking dread that the sacrifices he has demanded, of others and now of Optimus, are not leading Cybertron toward peace. That they will cost more than Megatron has any right to ask, and more than he is certain he can bear.
   (Excerpt from ch 6)

   Language:

   English

   Words:

   35,811

   Chapters:

   6/?

   Comments:

   246

   Kudos:

   518

   Bookmarks:

   114

   Hits:

   9,430

   Bookmarked by fylantro

   16 Feb 2026

   Bookmarker's Notes

   megop greatest of all time