Fate/stay night [Unlimited Blade Works] Season 1

Ten years ago, the magus Kiritsugu Emiya saved one lone survivor of a great disaster. As he cried in happiness, he proclaimed that by saving him, he had saved himself. The boy swore then that he would become a hero who lived to save others. Five years after the death of his foster father, Shirō Emiya finds himself drawn into a battle to the death between seven magi called Masters, where each commands the spirit of a hero of legend called a Servant in pursuit of having one wish granted by the legendary Holy Grail. In this battle, Shirō will finally have the chance to face the ghosts of his past, and to find his path to face his dreams and his future. Through the power of the Holy Grail, his wish will finally come true, for a hero of justice must have an evil to defeat.