The other being A Poisoned Chalice on
Sufficient Velocity and
fanfiction.net. The premise of it is that the catalyst system was never implemented, so the Grail summons servants based on compatibility with the master. Because I have something of a one-track mind, I'll just comment on the part that got my attention. It portrays Ibaraki Douji within a serious context, while still giving nods to her more human aspects we get to see in F:GO, such as her distaste for human flesh being hinted at (though, it can also just be thought to be her preference for sweets, but given Shuten did say she doesn't like it and her materials say she doesn't enjoy the act of killing and consuming people in and of itself...), but her complete willingness to partake in it as needs be. Other notable features include Kerry summoning Hassan of Serenity, Kariya ending up with Atalanta (and being much more stable because of it), and Kayneth summoning D'eon.