A greater future (Gilgamesh x Reader)

(Y/N) is a young girl in Fuyuki city. It's finally her time to join the other mages in the Holy Grail War, but she's afraid that she will lose. Her family was killed in the last war and she wants to do everything she can to win this one so that she can wish to have them back, but one particular man stands in her way: Gilgamesh. (Y/N) will not stop fighting the war until she wins the grail and gets her wish.