Link: http://archiveofourown.org/works/221339 (bonus - story with commentary: http://misheard.livejournal.com/58974.html)
Title: Victorious Forfeit
Author: MiniNephtys
Synopsis: Rin reads about the Second Grail War, which is strangely applicable to her own situation.
Contents: Archer/Rin, Romance/Comedy, Slice of Life, Unreliable Narrator (potential canon/fact errors)
Review: I'm not even big on Rin and Archer as a couple, but this story makes it fun through the lens of Rin reading up about an unreliable former Master's account of the Second Holy Grail War.
It's the little things that do it for me -- past Grail Wars, the educated guesses at Servants past, the use of devices like an unreliable narrator and a frame story, the Odd Couple-esque combination of Beauvais and his Archer -- even if the parallelism of Archer and Rin and the lady Master and Adonis is supposed to be the meat of the story. That said, the author catches Rin and Archer's banter in a bottle quite nicely, and I chuckled at the little touches like Beauvais casually mentioning how early the Einzberns washed out of the war.
There's only so much I can say before I talk in circles, and that's because it's so straightforward. It's a nice, simple little tale about Rin and Archer's dynamic juxtaposed with a Master-Servant love story of the past. The past being the best predictor of the future, etc.
Sure, it raises my hackles a bit with the notion that someone actually won the Grail (mitigated a bit by Rin pointing out Beauvais could be making the whole thing up), and the notion of a Master falling so madly and completely in love with her Sevant seems like a stronger link to Sola and Diarmuid than Rin and Archer. But that would make the whole thing darker than it really needs to be. There's also the simple fact that Rin would probably have more luck looking into her family's own history that going to some outsider's account for Grail stratagems, but that's nitpicking.
All in all, it's a fun little thought exercise in something unlikely that has been and could be again only in a Grail War.