Fate/stay night: Unlimited Blade Works

In this thrilling adventure, protagonist Shirou Emiya finds himself dragged into a lethal battle of wills known as the Holy Grail War. Each Mage summons a powerful heroic spirit as their servant, pitting them against one another in a gruesome fight to the death for the chance to have their deepest wish granted by the fabled Holy Grail. Unskilled in magic and entirely ignorant of this ancient competition, Shirou and his loyal servant Saber must navigate treacherous waters when they form an uneasy alliance with fellow Mage Rin Tohsaka. Their delicate partnership is further complicated as Shirou comes into conflict with Rin's own servant, the enigmatic Archer, whose animosity toward him threatens to unravel their fragile alliance in this high-stakes battle of magic and might.