Fate/stay night: Unlimited Blade Works

Shirou Emiya lives in Fuyuki City holding tightly to his adoptive father's dream of becoming someone who saves others, despite possessing only limited skill in magecraft. Everything changes when he witnesses a battle between superhuman warriors and becomes a target himself, accidentally summoning the Servant Saber and entering the Holy Grail War.

Seven Masters, each commanding a legendary heroic spirit, compete for a chalice said to grant any wish. Shirou becomes closely entangled with mage Rin Tohsaka and her mysterious Servant Archer, who seems to despise Shirou's ideals on a deeply personal level. As the war intensifies, the greatest challenge becomes the question Archer forces upon him: what remains of a person who insists on saving everyone at any cost?