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1. Bone of My Regret by sakuramatouirl

   Fandoms: Fate/Grand Order  

   • Explicit
   • No Archive Warnings Apply
   • Multi
   • Complete Work

   14 Sep 2025

   Tags

   • No Archive Warnings Apply
   • Rin Tohsaka x Archer (EMIYA) x Senji Muramasa (Saber) x Shirou Emiya
   • Rin Tohsaka
   • Archer (EMIYA)
   • Senji Muramasa (Saber)
   • Shirou Emiya
   • Foursome - F/M/M/M
   • Double Penetration
   • Mindfuck
   • Possessive Behavior
   • Emotional Hurt
   • Angst with a Happy Ending
   • Slow Burn
   • Identity Porn

   Summary

   Look, all Shirou wanted was to check in on Rin. He didn't want Archer and Muramasa roping him into having a foursome with her, but when it comes to those two smug bastards... well, shit happens.

   What follows is why the red bowman and blacksmith should never be left unsupervised.

   ~a fanfic about the horny chaos that ensues after Shirou finds his alternate selves in bed with his woman~

   Series

   • Part 2 of Rin Appreciation Smutfics

   Language:

   English

   Words:

   1,532

   Chapters:

   2/2

   Kudos:

   11

   Bookmarks:

   2

   Hits:

   310