The Crown of Legions, by SunPraiser31, Abridged. Basically.

A retelling of the fifth Holy Grail War in which Rin summons Saber as her servant instead of Archer. It is a mixture of the "Heaven's Feel" route from the original game and original plot elements. This version of Fate/Stay Night focuses primarily on Rin and Saber's relationship while also exploring the themes of gender and sexuality.

This is the tale of an ancient land of lush forests and verdant meadows. A land blessed by the Goddesses where the powers of light and shadow exist in perfect balance. This is the story of the kingdom of Hyrule, of a king who sought to control the power of the gods, and of a boy without a fairy. A boy whose struggle against the shadow became a legend, riding upon the winds of time.

Seven were the [Servants／Champions], and seven were their [Masters／Masters], beckoned forth by the coming [War／Trial], in the death throes of a tainted God. One was the Holy [Grail／Star], which seven pairs sought, for which seven pairs fought… and one was [a／The] Hero, who just wanted to save the world from the coming night. ::::: [Fate/Stay Night ／ A Song of Ice and Fire]

Two broken hearts, one turned cold by the cruelties of the world, one built by human hands, meet in the depths of an eternal winter. They fell in love, neither having a choice in the matter. Kiritsugu/Irisviel. Based off of the Drama CDs by Gen Urobuchi, set during the time before the Fourth Grail War and sometime afterward.

Annabeth left letters in her highschool library six years ago to anyone who found them. Percy was that anyone. The last one told him to live for her. And so he did. Percy is now a famous musician and Annabeth's an aspiring author. What happens when these two meet for the first time by accident and realize just how much those letters impacted them? Is it fate? Or something more?